Heterocyclic inhibitors of glutaminase

ABSTRACT

The invention relates to novel heterocyclic compounds and pharmaceutical preparations thereof. The invention further relates to methods of treatment using the novel heterocyclic compounds of the invention.

RELATED APPLICATIONS

This application claims the benefit of priority to U.S. ProvisionalPatent Application No. 61/562,266, filed Nov. 21, 2011, and U.S.Provisional Patent Application No. 61/665,370, filed Jun. 28, 2012,which applications are hereby incorporated by reference in theirentirety.

BACKGROUND

Glutamine supports cell survival, growth and proliferation throughmetabolic and non-metabolic mechanisms. In actively proliferating cells,the metabolism of glutamine to lactate, also referred to as“glutaminolysis” is a major source of energy in the form of NADPH. Thefirst step in glutaminolysis is the deamination of glutamine to formglutamate and ammonia, which is catalyzed by the glutaminase enzyme.Thus, deamination via glutaminase is a control point for glutaminemetabolism.

Ever since Warburg's observation that ascites tumor cells exhibited highrates of glucose consumption and lactate secretion in the presence ofoxygen (Warburg, 1956), researchers have been exploring how cancer cellsutilize metabolic pathways to be able to continue activelyproliferating. Several reports have demonstrated how glutaminemetabolism supports macromolecular synthesis necessary for cells toreplicate (Curthoys, 1995; DeBardinis, 2008).

Thus, glutaminase has been theorized to be a potential therapeutictarget for the treatment of diseases characterized by activelyproliferating cells, such as cancer. The lack of suitable glutaminaseinhibitors has made validation of this target impossible. Therefore, thecreation of glutaminase inhibitors that are specific and capable ofbeing formulated for in vivo use could lead to a new class oftherapeutics.

SUMMARY OF INVENTION

The present invention provides a compound of formula I,

or a pharmaceutically acceptable salt thereof, wherein:

-   L represents CH₂SCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₂, CH₂S, SCH₂, CH₂NHCH₂,    CH═CH, or

-    preferably CH₂CH₂, wherein any hydrogen atom of a CH or CH₂ unit    may be replaced by alkyl or alkoxy, any hydrogen of an NH unit may    be replaced by alkyl, and any hydrogen atom of a CH₂ unit of CH₂CH₂,    CH₂CH₂CH₂ or CH₂ may be replaced by hydroxy;-   X, independently for each occurrence, represents S, O or CH═CH,    preferably S or CH═CH, wherein any hydrogen atom of a CH unit may be    replaced by alkyl;-   Y, independently for each occurrence, represents H or CH₂O(CO)R₇,-   R₇, independently for each occurrence, represents H or substituted    or unsubstituted alkyl, alkoxy, aminoalkyl, alkylaminoalkyl,    heterocyclylalkyl, arylalkyl, or heterocyclylalkoxy;-   Z represents H or R₃(CO);-   R₁ and R₂ each independently represent H, alkyl, alkoxy or hydroxy;-   R₃, independently for each occurrence, represents substituted or    unsubstituted alkyl, hydroxyalkyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxy, alkoxyalkyl, aryl, arylalkyl, aryloxy,    aryloxyalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl,    heterocyclylalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy,    heteroaryloxyalkyl or C(R₈)(R₉)(R₁₀), N(R₄)(R₅) or OR₆, wherein any    free hydroxyl group may be acylated to form C(O)R₇;-   R₄ and R₅ each independently represent H or substituted or    unsubstituted alkyl, hydroxyalkyl, acyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxyalkyl, aryl, arylalkyl, aryloxy, aryloxyalkyl,    cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl,    heteroaryl, heteroarylalkyl, heteroaryloxy, or heteroaryloxyalkyl,    wherein any free hydroxyl group may be acylated to form C(O)R₇;-   R₆, independently for each occurrence, represents substituted or    unsubstituted alkyl, hydroxyalkyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxyalkyl, aryl, arylalkyl, aryloxy, aryloxyalkyl,    cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl,    heteroaryl, heteroarylalkyl, heteroaryloxy, or heteroaryloxyalkyl,    wherein any free hydroxyl group may be acylated to form C(O)R₇; and-   R₈, R₉ and R₁₀ each independently represent H or substituted or    unsubstituted alkyl, hydroxy, hydroxyalkyl, amino, acylamino,    aminoalkyl, acylaminoalkyl, alkoxycarbonyl, alkoxycarbonylamino,    alkenyl, alkoxy, alkoxyalkyl, aryl, arylalkyl, aryloxy,    aryloxyalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl,    heterocyclylalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy, or    heteroaryloxyalkyl, or R₈ and R₉ together with the carbon to which    they are attached, form a carbocyclic or heterocyclic ring system,    wherein any free hydroxyl group may be acylated to form C(O)R₇, and    wherein at least two of R₈, R₉ and R₁₀ are not H.

In certain embodiments, the present invention provides a pharmaceuticalpreparation suitable for use in a human patient, comprising an effectiveamount of any of the compounds described herein (e.g., a compound of theinvention, such as a compound of formula I), and one or morepharmaceutically acceptable excipients. In certain embodiments, thepharmaceutical preparations may be for use in treating or preventing acondition or disease as described herein. In certain embodiments, thepharmaceutical preparations have a low enough pyrogen activity to besuitable for intravenous use in a human patient.

The present invention further provides methods of treating or preventingcancer, immunological or neurological diseases as described herein,comprising administering a compound of the invention.

DETAILED DESCRIPTION OF THE DRAWINGS

FIG. 1 shows that intraperitoneal administration of compound 188 to miceresults in reduced tumor size in a HCT116 colon carcinoma xenograftmodel.

DETAILED DESCRIPTION OF THE INVENTION

The present invention provides a compound of formula I,

or a pharmaceutically acceptable salt thereof, wherein:

-   L represents CH₂SCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₂, CH₂S, SCH₂, CH₂NHCH₂,    CH═CH, or

-    preferably CH₂CH₂, wherein any hydrogen atom of a CH or CH₂ unit    may be replaced by alkyl or alkoxy, any hydrogen of an NH unit may    be replaced by alkyl, and any hydrogen atom of a CH₂ unit of CH₂CH₂,    CH₂CH₂CH₂ or CH₂ may be replaced by hydroxy;-   X, independently for each occurrence, represents S, O or CH═CH,    preferably S or

CH═CH, wherein any hydrogen atom of a CH unit may be replaced by alkyl;

-   Y, independently for each occurrence, represents H or CH₂O(CO)R₇;-   R₇, independently for each occurrence, represents H or substituted    or unsubstituted alkyl, alkoxy, aminoalkyl, alkylaminoalkyl,    heterocyclylalkyl, arylalkyl, or heterocyclylalkoxy;-   Z represents H or R₃(CO);-   R₁ and R₂ each independently represent H, alkyl, alkoxy or hydroxy;-   R₃, independently for each occurrence, represents substituted or    unsubstituted alkyl, hydroxyalkyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxy, alkoxyalkyl, aryl, arylalkyl, aryloxy,    aryloxyalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl,    heterocyclylalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy,    heteroaryloxyalkyl or C(R₈)(R₉)(R₁₀), N(R₄)(R₅) or OR₆, wherein any    free hydroxyl group may be acylated to form C(O)R₇;-   R₄ and R₅ each independently represent H or substituted or    unsubstituted alkyl, hydroxyalkyl, acyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxyalkyl, aryl, arylalkyl, aryloxy, aryloxyalkyl,    cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl,    heteroaryl, heteroarylalkyl, heteroaryloxy, or heteroaryloxyalkyl,    wherein any free hydroxyl group may be acylated to form C(O)R₇;-   R₆, independently for each occurrence, represents substituted or    unsubstituted alkyl, hydroxyalkyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxyalkyl, aryl, arylalkyl, aryloxy, aryloxyalkyl,    cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl,    heteroaryl, heteroarylalkyl, heteroaryloxy, or heteroaryloxyalkyl,    wherein any free hydroxyl group may be acylated to form C(O)R₇; and-   R₈, R₉ and R₁₀ each independently represent H or substituted or    unsubstituted alkyl, hydroxy, hydroxyalkyl, amino, acylamino,    aminoalkyl, acylaminoalkyl, alkoxycarbonyl, alkoxycarbonylamino,    alkenyl, alkoxy, alkoxyalkyl, aryl, arylalkyl, aryloxy,    aryloxyalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl,    heterocyclylalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy, or    heteroaryloxyalkyl, or R₈ and R₉ together with the carbon to which    they are attached, form a carbocyclic or heterocyclic ring system,    wherein any free hydroxyl group may be acylated to form C(O)R₇, and    wherein at least two of R₈, R₉ and R₁₀ are not H.

In certain embodiments wherein alkyl, hydroxyalkyl, amino, acylamino,aminoalkyl, acylaminoalkyl, alkenyl, alkoxy, alkoxyalkyl, aryl,arylalkyl, aryloxy, aryloxyalkyl, cycloalkyl, cycloalkylalkyl,heterocyclyl, heterocyclylalkyl, heteroaryl, heteroarylalkyl,heteroaryloxy, or heteroaryloxyalkyl are substituted, they aresubstituted with one or more substituents selected from substituted orunsubstituted alkyl, such as perfluoroalkyl (e.g., trifluoromethyl),alkenyl, alkoxy, alkoxyalkyl, aryl, aralkyl, arylalkoxy, aryloxy,aryloxyalkyl, hydroxyl, halo, alkoxy, such as perfluoroalkoxy (e.g.,trifluoromethoxy), alkoxyalkoxy, hydroxyalkyl, hydroxyalkylamino,hydroxyalkoxy, amino, aminoalkyl, alkylamino, aminoalkylalkoxy,aminoalkoxy, acylamino, acylaminoalkyl, such as perfluoro acylaminoalkyl(e.g., trifluoromethylacylaminoalkyl), acyloxy, cycloalkyl,cycloalkylalkyl, cycloalkylalkoxy, heterocyclyl, heterocyclylalkyl,heterocyclyloxy, heterocyclylalkoxy, heteroaryl, heteroarylalkyl,heteroarylalkoxy, heteroaryloxy, heteroaryloxyalkyl,heterocyclylaminoalkyl, heterocyclylaminoalkoxy, amido, amidoalkyl,amidine, imine, oxo, carbonyl (such as carboxyl, alkoxycarbonyl, formyl,or acyl, including perfluoroacyl (e.g., C(O)CF₃)), carbonylalkyl (suchas carboxyalkyl, alkoxycarbonylalkyl, formylalkyl, or acylalkyl,including perfluoroacylalkyl (e.g., -alkylC(O)CF₃)), carbamate,carbamatealkyl, urea, ureaalkyl, sulfate, sulfonate, sulfamoyl, sulfone,sulfonamide, sulfonamidealkyl, cyano, nitro, azido, sulfhydryl,alkylthio, thiocarbonyl (such as thioester, thioacetate, orthioformate), phosphoryl, phosphate, phosphonate or phosphinate.

In certain embodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₂,CH₂S, SCH₂, or CH₂NHCH₂, wherein any hydrogen atom of a CH₂ unit may bereplaced by alkyl or alkoxy, and any hydrogen atom of a CH₂ unit ofCH₂CH₂, CH₂CH₂CH₂ or CH₂ may be replaced by hydroxyl. In certainembodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂S or SCH₂. In certainembodiments, L represents CH₂CH₂. In certain embodiments, L is notCH₂SCH₂.

In certain embodiments, Y represents H.

In certain embodiments, X represents S or CH═CH. In certain embodiments,one or both X represents CH═CH. In certain embodiments, each Xrepresents S. In certain embodiments, one X represents S and the other Xrepresents CH═CH.

In certain embodiments, Z represents R₃(CO). In certain embodimentswherein Z is R₃(CO), each occurrence of R₃ is not identical (e.g., thecompound of formula I is not symmetrical).

In certain embodiments, R₁ and R₂ each represent H.

In certain embodiments, R₃ represents arylalkyl, heteroarylalkyl,cycloalkyl or heterocycloalkyl. In certain embodiments, R₃ representsC(R₈)(R₉)(R₁₀), wherein R₈ represents aryl, arylalkyl, heteroaryl orheteroaralkyl, such as aryl, arylalkyl or heteroaryl, R₉ represents H,and R₁₀ represents hydroxy, hydroxyalkyl, alkoxy or alkoxyalkyl, such ashydroxy, hydroxyalkyl or alkoxy.

In certain embodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂S or SCH₂, suchas CH₂CH₂, CH₂S or SCH₂, Y represents H, X represents S, Z representsR₃(CO), R₁ and R₂ each represent H, and each R₃ represents arylalkyl,heteroarylalkyl, cycloalkyl or heterocycloalkyl. In certain suchembodiments, each occurrence of R₃ is identical.

In certain embodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂S or SCH₂, Yrepresents H, X represents S, Z represents R₃(CO), R₁ and R₂ eachrepresent H, and each R₃ represents C(R₈)(R₉)(R₁₀), wherein R₈represents aryl, arylalkyl, heteroaryl or heteroaralkyl, such as aryl,arylalkyl or heteroaryl, R₉ represents H, and R₁₀ represents hydroxy,hydroxyalkyl, alkoxy or alkoxyalkyl, such as hydroxy, hydroxyalkyl oralkoxy. In certain such embodiments, each occurrence of R₃ is identical.

In certain embodiments, L represents CH₂CH₂, Y represents H, Xrepresents S or CH═CH, Z represents R₃(CO), R₁ and R₂ each represent H,and each R₃ represents substituted or unsubstituted arylalkyl,heteroarylalkyl, cycloalkyl or heterocycloalkyl. In certain suchembodiments, each X represents S. In other embodiments, one or bothoccurrences of X represents CH═CH, such as one occurrence of Xrepresents S and the other occurrence of X represents CH═CH. In certainembodiments of the foregoing, each occurrence of R₃ is identical. Inother embodiments of the foregoing wherein one occurrence of Xrepresents S and the other occurrence of X represents CH═CH, the twooccurrences of R₃ are not identical.

In certain embodiments, L represents CH₂CH₂, Y represents H, Xrepresents S, Z represents R₃(CO), R₁ and R₂ each represent H, and eachR₃ represents C(R₈)(R₉)(R₁₀), wherein R₈ represents aryl, arylalkyl orheteroaryl, R₉ represents H, and R₁₀ represents hydroxy, hydroxyalkyl oralkoxy. In certain such embodiments, R₈ represents aryl and R₁₀represents hydroxyalkyl. In certain such embodiments, each occurrence ofR₃ is identical.

In certain embodiments wherein L represents CH₂, CH₂CH₂CH₂ or CH₂CH₂, Xrepresents O, and Z represents R₃(CO), both R₃ groups are not alkyl,such as methyl, or C(R₈)(R₉)(R₁₀), wherein R₈, R₉ and R₁₀ are eachindependently hydrogen or alkyl.

In certain embodiments wherein L represents CH₂CH₂, X represents S, andZ represents R₃(CO), both R₃ groups are not phenyl or heteroaryl, suchas 2-furyl.

In certain embodiments wherein L represents CH₂CH₂, X represents O, andZ represents R₃(CO), both R₃ groups are not N(R₄)(R₅) wherein R₄ isaryl, such as phenyl, and R₅ is H.

In certain embodiments wherein L represents CH₂SCH₂, X represents S, andZ represents R₃(CO), both R₃ groups are not aryl, such as optionallysubstituted phenyl, aralkyl, such as benzyl, heteroaryl, such as2-furyl, 2-thienyl or 1,2,4-trizole, substituted or unsubstituted alkyl,such as methyl, chloromethyl, dichloromethyl, n-propyl, n-butyl, t-butylor hexyl, heterocyclyl, such as pyrimidine-2,4(1H,3H)-dione, or alkoxy,such as methoxy, pentyloxy or ethoxy.

In certain embodiments wherein L represents CH₂SCH₂, X represents S, andZ represents R₃(CO), both R₃ groups are not N(R₄)(R₅) wherein R₄ isaryl, such as substituted or unsubstituted phenyl (e.g., phenyl,3-tolyl, 4-tolyl, 4-bromophenyl or 4-nitrophenyl), and R₅ is H.

In certain embodiments wherein L represents CH₂CH₂CH₂, X represents S,and Z represents R₃(CO), both R₃ groups are not alkyl, such as methyl,ethyl, or propyl, cycloalkyl, such as cyclohexyl, or C(R₈)(R₉)(R₁₀),wherein any of R₈, R₉ and R₁₀ together with the C to which they areattached, form any of the foregoing.

In certain embodiments, the compound is not one of the following:

The present invention further provides a compound of formula Ia,

or a pharmaceutically acceptable salt thereof, wherein:

-   L represents CH₂SCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₂, CH₂S, SCH₂, CH₂NHCH₂,    CH═CH, or

-    preferably CH₂CH₂, wherein any hydrogen atom of a CH or CH₂ unit    may be replaced by alkyl or alkoxy, any hydrogen of an NH unit may    be replaced by alkyl, and any hydrogen atom of a CH₂ unit of CH₂CH₂,    CH₂CH₂CH₂ or CH₂ may be replaced by hydroxy;-   X represents S, O or CH═CH, preferably S or CH═CH, wherein any    hydrogen atom of a CH unit may be replaced by alkyl;-   Y, independently for each occurrence, represents H or CH₂O(CO)R₇,-   R₇, independently for each occurrence, represents H or substituted    or unsubstituted alkyl, alkoxy, aminoalkyl, alkylaminoalkyl,    heterocyclylalkyl, arylalkyl, or heterocyclylalkoxy;-   Z represents H or R₃(CO);-   R₁ and R₂ each independently represent H, alkyl, alkoxy or hydroxy,    preferably H;-   R₃ represents substituted or unsubstituted alkyl, hydroxyalkyl,    aminoalkyl, acylaminoalkyl, alkenyl, alkoxy, alkoxyalkyl, aryl,    arylalkyl, aryloxy, aryloxyalkyl, cycloalkyl, cycloalkylalkyl,    heterocyclyl, heterocyclylalkyl, heteroaryl, heteroarylalkyl,    heteroaryloxy, heteroaryloxyalkyl or C(R₈)(R₉)(R₁₀), N(R₄)(R₅) or    OR₆, wherein any free hydroxyl group may be acylated to form C(O)R₇;-   R₄ and R₅ each independently represent H or substituted or    unsubstituted alkyl, hydroxyalkyl, acyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxyalkyl, aryl, arylalkyl, aryloxy, aryloxyalkyl,    cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl,    heteroaryl, heteroarylalkyl, heteroaryloxy, or heteroaryloxyalkyl,    wherein any free hydroxyl group may be acylated to form C(O)R₇;-   R₆, independently for each occurrence, represents substituted or    unsubstituted alkyl, hydroxyalkyl, aminoalkyl, acylaminoalkyl,    alkenyl, alkoxyalkyl, aryl, arylalkyl, aryloxy, aryloxyalkyl,    cycloalkyl, cycloalkylalkyl, heterocyclyl, heterocyclylalkyl,    heteroaryl, heteroarylalkyl, heteroaryloxy, or heteroaryloxyalkyl,    wherein any free hydroxyl group may be acylated to form C(O)R₇; and-   R₈, R₉ and R₁₀ each independently represent H or substituted or    unsubstituted alkyl, hydroxy, hydroxyalkyl, amino, acylamino,    aminoalkyl, acylaminoalkyl, alkoxycarbonyl, alkoxycarbonylamino,    alkenyl, alkoxy, alkoxyalkyl, aryl, arylalkyl, aryloxy,    aryloxyalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl,    heterocyclylalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy, or    heteroaryloxyalkyl, or R₈ and R₉ together with the carbon to which    they are attached, form a carbocyclic or heterocyclic ring system,    wherein any free hydroxyl group may be acylated to form C(O)R₇, and    wherein at least two of R₈, R₉ and R₁₀ are not H;-   R₁₁ represents substituted or unsubstituted aryl, arylalkyl,    aryloxy, aryloxyalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy,    or heteroaryloxyalkyl, or C(R₁₂)(R₁₃)(R₁₄), N(R₄)(R₁₄) or OR₁₄,    wherein any free hydroxyl group may be acylated to form C(O)R₇;-   R₁₂ and R₁₃ each independently represent H or substituted or    unsubstituted alkyl, hydroxy, hydroxyalkyl, amino, acylamino,    aminoalkyl, acylaminoalkyl, alkoxycarbonyl, alkoxycarbonylamino,    alkenyl, alkoxy, alkoxyalkyl, aryl, arylalkyl, aryloxy,    aryloxyalkyl, cycloalkyl, cycloalkylalkyl, heterocyclyl,    heterocyclylalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy, or    heteroaryloxyalkyl, wherein any free hydroxyl group may be acylated    to form C(O)R₇, and wherein both of R₁₂ and R₁₃ are not H; and-   R₁₄ represents substituted or unsubstituted aryl, arylalkyl,    aryloxy, aryloxyalkyl, heteroaryl, heteroarylalkyl, heteroaryloxy,    or heteroaryloxyalkyl.

In certain embodiments wherein alkyl, hydroxyalkyl, amino, acylamino,aminoalkyl, acylaminoalkyl, alkenyl, alkoxy, alkoxyalkyl, aryl,arylalkyl, aryloxy, aryloxyalkyl, cycloalkyl, cycloalkylalkyl,heterocyclyl, heterocyclylalkyl, heteroaryl, heteroarylalkyl,heteroaryloxy, or heteroaryloxyalkyl are substituted, they aresubstituted with one or more substituents selected from substituted orunsubstituted alkyl, such as perfluoroalkyl (e.g., trifluoromethyl),alkenyl, alkoxy, alkoxyalkyl, aryl, aralkyl, arylalkoxy, aryloxy,aryloxyalkyl, hydroxyl, halo, alkoxy, such as perfluoroalkoxy (e.g.,trifluoromethylalkoxy), alkoxyalkoxy, hydroxyalkyl, hydroxyalkylamino,hydroxyalkoxy, amino, aminoalkyl, alkylamino, aminoalkylalkoxy,aminoalkoxy, acylamino, acylaminoalkyl, such as perfluoro acylaminoalkyl(e.g., trifluoromethylacylaminoalkyl), acyloxy, cycloalkyl,cycloalkylalkyl, cycloalkylalkoxy, heterocyclyl, heterocyclylalkyl,heterocyclyloxy, heterocyclylalkoxy, heteroaryl, heteroarylalkyl,heteroarylalkoxy, heteroaryloxy, heteroaryloxyalkyl,heterocyclylaminoalkyl, heterocyclylaminoalkoxy, amido, amidoalkyl,amidine, imine, oxo, carbonyl (such as carboxyl, alkoxycarbonyl, formyl,or acyl, including perfluoroacyl (e.g., C(O)CF₃)), carbonylalkyl (suchas carboxyalkyl, alkoxycarbonylalkyl, formylalkyl, or acylalkyl,including perfluoroacylalkyl (e.g., -alkylC(O)CF₃)), carbamate,carbamatealkyl, urea, ureaalkyl, sulfate, sulfonate, sulfamoyl, sulfone,sulfonamide, sulfonamidealkyl, cyano, nitro, azido, sulfhydryl,alkylthio, thiocarbonyl (such as thioester, thioacetate, orthioformate), phosphoryl, phosphate, phosphonate or phosphinate.

In certain embodiments, R₁₁ represents substituted or unsubstitutedarylalkyl, such as substituted or unsubstituted benzyl.

In certain embodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂CH₂CH₂, CH₂,CH₂S, SCH₂, or CH₂NHCH₂, wherein any hydrogen atom of a CH₂ unit may bereplaced by alkyl or alkoxy, and any hydrogen atom of a CH₂ unit ofCH₂CH₂, CH₂CH₂CH₂ or CH₂ may be replaced by hydroxyl. In certainembodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂S or SCH₂, preferablyCH₂CH₂. In certain embodiments, L is not CH₂SCH₂.

In certain embodiments, each Y represents H. In other embodiments, atleast one Y is CH₂O(CO)R₇.

In certain embodiments, X represents S or CH═CH. In certain embodiments,X represents S.

In certain embodiments, R₁ and R₂ each represent H.

In certain embodiments, Z represents R₃(CO). In certain embodimentswherein Z is R₃(CO), R₃ and R₁₁ are not identical (e.g., the compound offormula I is not symmetrical).

In certain embodiments, Z represents R₃(CO) and R₃ represents arylalkyl,heteroarylalkyl, cycloalkyl or heterocycloalkyl. In certain embodiments,Z represents R₃(CO) and R₃ represents C(R₈)(R₉)(R₁₀), wherein R₈represents aryl, arylalkyl, heteroaryl or heteroaralkyl, such as aryl,arylalkyl or heteroaryl, R₉ represents H, and R₁₀ represents hydroxy,hydroxyalkyl, alkoxy or alkoxyalkyl, such as hydroxy, hydroxyalkyl oralkoxy. In certain embodiments, Z represents R₃(CO) and R₃ representsheteroarylalkyl.

In certain embodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂S or SCH₂, suchas CH₂CH₂, Y represents H, X represents S, Z represents R₃(CO), R₁ andR₂ each represent H, R₃ represents arylalkyl, heteroarylalkyl,cycloalkyl or heterocycloalkyl, and R₁₁ represents arylalkyl. In certainsuch embodiments, R₃ represents heteroarylalkyl.

In certain embodiments, L represents CH₂SCH₂, CH₂CH₂, CH₂S or SCH₂, suchas CH₂CH₂, Y represents H, X represents S, Z represents R₃(CO), R₁ andR₂ each represent H, and each R₃ represents C(R₈)(R₉)(R₁₀), wherein R₈represents aryl, arylalkyl, heteroaryl or heteroaralkyl, such as aryl,arylalkyl or heteroaryl, R₉ represents H, and R₁₀ represents hydroxy,hydroxyalkyl, alkoxy or alkoxyalkyl, such as hydroxy, hydroxyalkyl oralkoxy, and R₁₁ represents arylalkyl. In certain such embodiments, R₈represents heteroaryl.

In certain embodiments, L represents CH₂CH₂, Y represents H, Xrepresents S or CH═CH, such as S, Z represents R₃(CO), R₁ and R₂ eachrepresent H, R₃ represents substituted or unsubstituted arylalkyl,heteroarylalkyl, cycloalkyl or heterocycloalkyl, and R₁₁ representsarylalkyl. In certain such embodiments, R₃ represents heteroarylalkyl.

In certain embodiments, L represents CH₂CH₂, Y represents H, Xrepresents S, Z represents R₃(CO), R₁ and R₂ each represent H, R₃represents C(R₈)(R₉)(R₁₀), wherein R₈ represents aryl, arylalkyl orheteroaryl, R₉ represents H, and R₁₀ represents hydroxy, hydroxyalkyl oralkoxy, and R₁₁ represents arylalkyl. In certain such embodiments, R₈represents aryl and R₁₀ represents hydroxyalkyl. In certain otherembodiments, R₈ represents heteroaryl.

In certain embodiments, the compound is selected from any one of thecompounds disclosed in Table 3. Preferably, the compound is selectedfrom compound 1, 2, 6, 7, 8, 11, 13, 14, 15, 16, 17, 18, 19, 20, 21, 24,25, 26, 27, 28, 29, 30, 31, 32, 33, 35, 36, 38, 39, 40, 41, 43, 44, 47,48, 50, 51, 52, 54, 55, 58, 63, 64, 65, 67, 68, 69, 70, 71, 72, 73, 77,78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 92, 93, 94, 95, 97, 99, 100,102, 105, 107, 111, 112, 114, 115, 116, 117, 118, 120, 121, 122, 123,126, 127, 133, 135, 136, 138, 140, 141, 143, 146, 147, 148, 152, 153,155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 168, 169,170, 172, 173, 174, 175, 176, 177, 178, 179, 180, 181, 182, 185, 186,187, 188, 189, 190, 193, 194, 195, 196, 197, 198, 199, 200, 201, 202,203, 204, 205, 208, 210, 211, 213, 214, 216, 217, 219, 220, 226, 227,228, 229, 231, 232, 234, 235, 236, 237, 239, 240, 241, 242, 243, 244,245, 246, 247, 248, 249, 250, 251, 252, 255, 256, 257, 258, 259, 260,261, 262, 263, 264, 265, 266, 267, 268, 269, 270, 271, 273, 274, 275,276, 278, 279, 280, 281, 282, 283, 285, 286, 287, 288, 290, 291, 292,293, 294, 295, 296, 297, 298, 299, 300, 302, 304, 1038, 306, 307, 308,309, 310, 311, 313, 314, 315, 316, 317, 318, 319, 320, 321, 322, 323,324, 325, 327, 329, 332, 333, 334, 335, 336, 337, 338, 339, 340, 341,342, 343, 344, 345, 346, 527, 347, 348, 349, 350, 351, 352, 353, 354,355, 358, 359, 360, 361, 362, 363, 364, 365, 366, 367, 368, 369, 370,371, 372, 373, 374, 375, 376, 377, 378, 379, 380, 381, 382, 383, 384,385, 386, 387, 388, 389, 390, 391, 392, 393, 394, 395, 396, 397, 398,399, 400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412,413, 414, 415, 416, 417, 418, 419, 420, 421, 422, 423, 424, 425, 426,427, 428, 429, 430, 431, 432, 433, 434, 435, 436, 437, 438, 439, 440,441, 442, 443, 444, 445, 446, 447, 448, 449, 450, 451, 452, 453, 454,455, 456, 457, 458, 459, 460, 461, 462, 463, 464, 465, 466, 467, 468,469, 470, 471, 472, 473, 474, 475, 476, 477, 478, 479, 480, 481, 482,483, 484, 485, 486, 487, 488, 489, 490, 491, 492, 493, 494, 495, 496,497, 498, 499, 500, 501, 502, 503, 504, 505, 506, 507, 508, 509, 510,511, 512, 513, 514, 515, 516, 517, 518, 519, 520, 521, 522, 523, 528,529, 530, 531, 532, 533, 534, 535, 536, 537, 538, 539, 540, 541, 542,543, 544, 545, 546, 547, 548, 549, 550, 551, 552, 553, 554, 555, 556,557, 558, 559, 560, 561, 562, 563, 564, 565, 566, 567, 568, 569, 570,571, 572, 573, 574, 575, 576, 577, 578, 579, 580, 581, 582, 583, 584,585, 586, 587, 588, 589, 590, 591, 592, 593, 594, 595, 596, 597, 598,599, 600, 601, 602, 603, 604, 605, 606, 607, 608, 609, 610, 611, 612,613, 614, 615, 616, 617, 618, 619, 620, 621, 622, 623, 624, 625, 626,627, 628, 629, 630, 631, 632, 633, 634, 635, 636, 638, 639, 640, 641,644, 645, 646, 647, 648, 649, 650, 651, 652, 653, 654, 655, 656, 657,658, 659, 660, 661, 662, 663, 664, 665, 666, 667, 668, 669, 670, 671,672, 673, 674, 675, 676, 677, 678, 679, 680, 681, 682, 683, 684, 685,686, 687, 688, 689, 690, 692, 693, 694, 695, 696, 697, 698, 699, 700,701, 702, 703, 704, 705, 707, 708, or 709.

In certain embodiments, compounds of the invention may be prodrugs ofthe compounds of formula I, e.g., wherein a hydroxyl in the parentcompound is presented as an ester or a carbonate, or carboxylic acidpresent in the parent compound is presented as an ester. In certain suchembodiments, the prodrug is metabolized to the active parent compound invivo (e.g., the ester is hydrolyzed to the corresponding hydroxyl, orcarboxylic acid).

In certain embodiments, compounds of the invention may be racemic. Incertain embodiments, compounds of the invention may be enriched in oneenantiomer. For example, a compound of the invention may have greaterthan 30% ee, 40% ee, 50% ee, 60% ee, 70% ee, 80% ee, 90% ee, or even 95%or greater ee. In certain embodiments, compounds of the invention mayhave more than one stereocenter. In certain such embodiments, compoundsof the invention may be enriched in one or more diastereomer. Forexample, a compound of the invention may have greater than 30% de, 40%de, 50% de, 60% de, 70% de, 80% de, 90% de, or even 95% or greater de.

In certain embodiments, the present invention relates to methods oftreatment with a compound of formula I, or a pharmaceutically acceptablesalt thereof. In certain embodiments, the therapeutic preparation may beenriched to provide predominantly one enantiomer of a compound (e.g., offormula I). An enantiomerically enriched mixture may comprise, forexample, at least 60 mol percent of one enantiomer, or more preferablyat least 75, 90, 95, or even 99 mol percent. In certain embodiments, thecompound enriched in one enantiomer is substantially free of the otherenantiomer, wherein substantially free means that the substance inquestion makes up less than 10%, or less than 5%, or less than 4%, orless than 3%, or less than 2%, or less than 1% as compared to the amountof the other enantiomer, e.g., in the composition or compound mixture.For example, if a composition or compound mixture contains 98 grams of afirst enantiomer and 2 grams of a second enantiomer, it would be said tocontain 98 mol percent of the first enantiomer and only 2% of the secondenantiomer.

In certain embodiments, the therapeutic preparation may be enriched toprovide predominantly one diastereomer of a compound (e.g., of formulaI). A diastereomerically enriched mixture may comprise, for example, atleast 60 mol percent of one diastereomer, or more preferably at least75, 90, 95, or even 99 mol percent.

In certain embodiments, the present invention relates to methods oftreatment with a compound of formula I, or a pharmaceutically acceptablesalt thereof. In certain embodiments, the therapeutic preparation may beenriched to provide predominantly one enantiomer of a compound (e.g., offormula I). An enantiomerically enriched mixture may comprise, forexample, at least 60 mol percent of one enantiomer, or more preferablyat least 75, 90, 95, or even 99 mol percent. In certain embodiments, thecompound enriched in one enantiomer is substantially free of the otherenantiomer, wherein substantially free means that the substance inquestion makes up less than 10%, or less than 5%, or less than 4%, orless than 3%, or less than 2%, or less than 1% as compared to the amountof the other enantiomer, e.g., in the composition or compound mixture.For example, if a composition or compound mixture contains 98 grams of afirst enantiomer and 2 grams of a second enantiomer, it would be said tocontain 98 mol percent of the first enantiomer and only 2% of the secondenantiomer.

In certain embodiments, the therapeutic preparation may be enriched toprovide predominantly one diastereomer of a compound (e.g., of formulaI). A diastereomerically enriched mixture may comprise, for example, atleast 60 mol percent of one diastereomer, or more preferably at least75, 90, 95, or even 99 mol percent.

In certain embodiments, the present invention provides a pharmaceuticalpreparation suitable for use in a human patient, comprising any of thecompounds shown above (e.g., a compound of the invention, such as acompound of formula I), and one or more pharmaceutically acceptableexcipients. In certain embodiments, the pharmaceutical preparations maybe for use in treating or preventing a condition or disease as describedherein. In certain embodiments, the pharmaceutical preparations have alow enough pyrogen activity to be suitable for use in a human patient.

Compounds of any of the above structures may be used in the manufactureof medicaments for the treatment of any diseases or conditions disclosedherein.

Uses of Enzyme Inhibitors

Glutamine plays an important role as a carrier of nitrogen, carbon, andenergy. It is used for hepatic urea synthesis, for renal ammoniagenesis,for gluconeogenesis, and as respiratory fuel for many cells. Theconversion of glutamine into glutamate is initated by the mitochondrialenzyme, glutaminase (“GLS”). There are two major forms of the enzyme,K-type and L-type, which are distinguished by their Km values forglutamine and response to glutamate, wherein the Km value, or Michaelisconstant, is the concentration of substrate required to reach half themaximal velocity. The L-type, also known as “liver-type” or GLS2, has ahigh Km for glutamine and is glutamate resistant. The K-type, also knownas “kidney-type or GLS1, has a low Km for glutamine and is inhibited byglutamate. An alternative splice form of GLS1, referred to asglutmainase C or “GAC”, has been identified recently and has similaractivity characteristics of GLS1. In certain embodiments, the compoundsmay selectively inhibit GLS1, GLS2 and GAC. In a preferred embodiment,the compounds selectively inhibit GLS1 and GAC.

In addition to serving as the basic building blocks of proteinsynthesis, amino acids have been shown to contribute to many processescritical for growing and dividing cells, and this is particularly truefor cancer cells. Nearly all definitions of cancer include reference todysregulated proliferation. Numerous studies on glutamine metabolism incancer indicate that many tumors are avid glutamine consumers (Souba,Ann. Surg., 1993; Collins et al., J. Cell. Physiol., 1998; Medina, J.Nutr., 2001; Shanware et al., J. Mol. Med., 2011). An embodiment of theinvention is the use of the compounds described herein for the treatmentof cancer.

In certain embodiments, the cancer may be one or a variant of AcuteLymphoblastic Leukemia (ALL), Acute Myeloid Leukemia (AML),Adrenocortical Carcinoma, AIDS-Related Cancers (Kaposi Sarcoma andLymphoma), Anal Cancer, Appendix Cancer, Atypical Teratoid/RhabdoidTumor, Basal Cell Carcinoma, Bile Duct Cancer (including Extrahepatic),Bladder Cancer, Bone Cancer (including Osteosarcoma and MalignantFibrous Histiocytoma), Brain Tumor (such as Astrocytomas, Brain andSpinal Cord Tumors, Brain Stem Glioma, Central Nervous System AtypicalTeratoid/Rhabdoid Tumor, Central Nervous System Embryonal Tumors,Craniopharyngioma, Ependymoblastoma, Ependymoma, Medulloblastoma,Medulloepithelioma, Pineal Parenchymal Tumors of IntermediateDifferentiation, Supratentorial Primitive Neuroectodermal Tumors andPineoblastoma), Breast Cancer, Bronchial Tumors, Burkitt Lymphoma, BasalCell Carcinoma, Bile Duct Cancer (including Extrahepatic), BladderCancer, Bone Cancer (including Osteosarcoma and Malignant FibrousHistiocytoma), Carcinoid Tumor, Carcinoma of Unknown Primary, CentralNervous System (such as Atypical Teratoid/Rhabdoid Tumor, EmbryonalTumors and Lymphoma), Cervical Cancer, Childhood Cancers, Chordoma,Chronic Lymphocytic Leukemia (CLL), Chronic Myelogenous Leukemia (CML),Chronic Myeloproliferative Disorders, Colon Cancer, Colorectal Cancer,Craniopharyngioma, Cutaneous T-Cell Lymphoma (Mycosis Fungoides andSézary Syndrome), Duct, Bile (Extrahepatic), Ductal Carcinoma In Situ(DCIS), Embryonal Tumors (Central Nervous System), Endometrial Cancer,Ependymoblastoma, Ependymoma, Esophageal Cancer, Esthesioneuroblastoma,Ewing Sarcoma Family of Tumors, Extracranial Germ Cell Tumor,Extragonadal Germ Cell Tumor, Extrahepatic Bile Duct Cancer, Eye Cancer(like Intraocular Melanoma, Retinoblastoma), Fibrous Histiocytoma ofBone (including Malignant and Osteosarcoma) Gallbladder Cancer, Gastric(Stomach) Cancer, Gastrointestinal Carcinoid Tumor, GastrointestinalStromal Tumors (GIST), Germ Cell Tumor (Extracranial, Extragonadal,Ovarian), Gestational Trophoblastic Tumor, Glioma, Hairy Cell Leukemia,Head and Neck Cancer, Heart Cancer, Hepatocellular (Liver) Cancer,Histiocytosis, Langerhans Cell, Hodgkin Lymphoma, Hypopharyngeal Cancer,Intraocular Melanoma, Islet Cell Tumors (Endocrine, Pancreas), KaposiSarcoma, Kidney (including Renal Cell), Langerhans Cell Histiocytosis,Laryngeal Cancer, Leukemia (including Acute Lymphoblastic (ALL), AcuteMyeloid (AML), Chronic Lymphocytic (CLL), Chronic Myelogenous (CML),Hairy Cell), Lip and Oral Cavity Cancer, Liver Cancer (Primary), LobularCarcinoma In Situ (LCIS), Lung Cancer (Non-Small Cell and Small Cell),Lymphoma (AIDS-Related, Burkitt, Cutaneous T-Cell (Mycosis Fungoides andSézary Syndrome), Hodgkin, Non-Hodgkin, Primary Central Nervous System(CNS), Macroglobulinemia, Waldenström, Male Breast Cancer, MalignantFibrous Histiocytoma of Bone and Osteosarcoma, Medulloblastoma,Medulloepithelioma, Melanoma (including Intraocular (Eye)), Merkel CellCarcinoma, Mesothelioma (Malignant), Metastatic Squamous Neck Cancerwith Occult Primary, Midline Tract Carcinoma Involving NUT Gene, MouthCancer, Multiple Endocrine Neoplasia Syndromes, Multiple Myeloma/PlasmaCell Neoplasm, Mycosis Fungoides, Myelodysplastic Syndromes,Myelodysplastic/Myeloproliferative Neoplasms, Myelogenous Leukemia,Chronic (CML), Myeloid Leukemia, Acute (AML), Myeloma and MultipleMyeloma, Myeloproliferative Disorders (Chronic), Nasal Cavity andParanasal Sinus Cancer, Nasopharyngeal Cancer, Neuroblastoma,Non-Hodgkin Lymphoma, Non-Small Cell Lung Cancer, Oral Cancer, OralCavity Cancer, Lip and, Oropharyngeal Cancer, Osteosarcoma and MalignantFibrous Histiocytoma of Bone, Ovarian Cancer (such as Epithelial, GermCell Tumor, and Low Malignant Potential Tumor), Pancreatic Cancer(including Islet Cell Tumors), Papillomatosis, Paraganglioma, ParanasalSinus and Nasal Cavity Cancer, Parathyroid Cancer, Penile Cancer,Pharyngeal Cancer, Pheochromocytoma, Pineal Parenchymal Tumors ofIntermediate Differentiation, Pineoblastoma and Supratentorial PrimitiveNeuroectodermal Tumors, Pituitary Tumor, Plasma Cell Neoplasm/MultipleMyeloma, Pleuropulmonary Blastoma, Pregnancy and Breast Cancer, PrimaryCentral Nervous System (CNS) Lymphoma, Prostate Cancer, Rectal Cancer,Renal Cell (Kidney) Cancer, Renal Pelvis and Ureter, Transitional CellCancer, Retinoblastoma, Rhabdomyosarcoma, Salivary Gland Cancer, Sarcoma(like Ewing Sarcoma Family of Tumors, Kaposi, Soft Tissue, Uterine),Sézary Syndrome, Skin Cancer (such as Melanoma, Merkel Cell Carcinoma,Nonmelanoma), Small Cell Lung Cancer, Small Intestine Cancer, SoftTissue Sarcoma, Squamous Cell Carcinoma, Squamous Neck Cancer withOccult Primary, Metastatic, Stomach (Gastric) Cancer, SupratentorialPrimitive Neuroectodermal Tumors, T-Cell Lymphoma (Cutaneous, MycosisFungoides and Sezary Syndrome), Testicular Cancer, Throat Cancer,Thymoma and Thymic Carcinoma, Thyroid Cancer, Transitional Cell Cancerof the Renal Pelvis and Ureter, Trophoblastic Tumor (Gestational),Unknown Primary, Unusual Cancers of Childhood, Ureter and Renal Pelvis,Transitional Cell Cancer, Urethral Cancer, Uterine Cancer, Endometrial,Uterine Sarcoma, Waldenström Macroglobulinemia and Wilms Tumor.

In some instances, oncogenic mutations promote glutamine metabolism.Cells expressing oncogenic K-Ras exhibt increased ultilization ofglutamine (Weinberg et al., Proc. Natl. Acad. Sci. USA, 2010; Gaglio etal., Mol. Syst. Biol., 2011). In certain embodiments, the cancer cellshave a mutated K-Ras gene. In certain embodiments, the cancer isassociated with tissue of the bladder, bone marrow, breast, colon,kidney, liver, lung, ovary, pancreas, prostate, skin or thyroid. Thec-Myc gene is known to be altered in numerous cancers (Zeller et al.,Genome biology, 2003). Increased Myc protein expression has beencorrelated with increased expression of glutaminase, leading toup-regulation of glutamine metabolism (Dang et al., Clin. Cancer Res.,2009; Gao et al., Nature, 2009). In certain embodiments, the cancercells have an oncogenic c-Myc gene or elevated Myc protein expression.In some embodiments, the cancer is associated with tissue of thebladder, bone, bowel, breast, central nervous system (like brain),colon, gastric system (such as stomach and intestine), liver, lung,ovary, prostate, muscle, and skin.

While many cancer cells depend on exogenous glutamine for survival, thedegree of glutamine dependence among tumor cell subtypes may make apopulation of cells more susceptible to the reduction of glutamine. Asan example, gene expression analysis of breast cancers has identifiedfive intrinsic subtypes (luminal A, luminal B, basal, HER2+, andnormal-like) (Sorlie et al., Proc Natl Acad Sci USA, 2001). Althoughglutamine deprivation has an impact on cell growth and viability,basal-like cells appear to be more sensitive to the reduction ofexogenous glutamine (Kung et al., PLoS Genetics, 2011). This supportsthe concept that glutamine is a very important energy source inbasal-like breast cancer cell lines, and suggests that inhibition of theglutaminase enzyme would be beneficial in the treatment of breastcancers comprised of basal-like cells. Triple-negative breast cancer(TNBC) is characterized by a lack of estrogen receptor, progesteronereceptor and human epidermal growth factor receptor 2 expression. It hasa higher rate of relapse following chemotherapy, and a poorer prognosisthan with the other breast cancer subtypes (Dent et al., Clin Cancerres, 2007). Interestingly, there appears to be significant similaritiesin metabolic profiling between TNBC cells and basal-like breast cancercells (unpublished data). Therefore, an embodiment of the invention isthe use of the compounds described herein for the treatment of TNBC andbasal-type breast cancers.

Cachexia, the massive loss of muscle mass, is often associated with poorperformance status and high mortality rate of cancer patients. A theorybehind this process is that tumors require more glutamine than isnormally supplied by diet, so muscle, a major source of glutamine,starts to breakdown in order to supply enough nutrient to the tumor.Thus, inhibition of glutaminase may reduce the need to breakdown muscle.An embodiment of the invention is the use of the present compounds toprevent, inhibit or reduce cachexia.

The most common neurotransmitter is glutamate, derived from theenzymatic conversion of glutamine via glutaminase. High levels ofglutamate have been shown to be neurotoxic. Following traumatic insultto neuronal cells, there occurs a rise in neurotransmitter release,particularly glutamate. Accordingly, inhibition of glutaminase has beenhypothesized as a means of treatment following an ischemic insult, suchas stroke (Newcomb, PCT WO 99/09825, Kostandy, Neurol. Sci., 2011).Huntington's disease is a progressive, fatal neurological condition. Ingenetic mouse models of Huntington's disease, it was observed that theearly manifestation of the disease correlated with dysregulatedglutamate release (Raymond et al., Neuroscience, 2011). InHIV-associated dementia, HIV infected macrophages exhibit upregulatedglutaminase activity and increased glutamate release, leading toneuronal damage (Huang et al., J Neurosci., 2011). Similarly, in anotherneurological disease, the activated microglia in Rett Syndrome releaseglutamate causing neuronal damage. The release of excess glutamate hasbeen associated with the up-regulation of glutaminase (Maezawa et al.,J. Neurosci, 2010). In mice bred to have reduced glutaminase levels,sensitivity to psychotic-stimulating drugs, such as amphetamines, wasdramatically reduced, thus suggesting that glutaminase inhibition may bebeneficial in the treatment of schizophrenia (Gaisler-Salomon et al.,Neuropsychopharmacology, 2009). Bipolar disorder is a devastatingillness that is marked by recurrent episodes of mania and depression.This disease is treated with mood stabilizers such as lithium andvalproate; however, chronic use of these drugs appear to increase theabundance of glutamate receptors (Nanavati et al., J. Neurochem., 2011),which may lead to a decrease in the drug's effectiveness over time.Thus, an alternative treatment may be to reduce the amount of glutamateby inhibiting glutaminase. This may or may not be in conjunction withthe mood stabilizers. Memantine, a partial antagonist ofN-methyl-D-aspartate receptor (NMDAR), is an approved therapeutic in thetreatment of Alzheimer's disease. Currently, research is being conductedlooking at memantine as a means of treating vascular dementia andParkinson's disease (Oliverares et al., Curr. Alzheimer Res., 2011).Since memantine has been shown to partially block the NMDA glutamatereceptor also, it is not unresasonable to speculate that decreasingglutamate levels by inhibiting glutaminase could also treat Alzheimer'sdisease, vascular dementia and Parkinson's disease. Alzheimer's disease,bipolar disorder, HIV-associated dementia, Huntington's disease,ischemic insult, Parkinson's disease, schizophrenia, stroke, traumaticinsult and vascular dementia are but a few of the neurological diseasesthat have been correlated to increased levels of glutamate. Thus,inhibiting glutaminase with a compound described herein can reduce orprevent neurological diseases. Therefore, in one embodiment, thecompounds may be used for the treatment or prevention of neurologicaldiseases.

Activation of T lymphocytes induces cell growth, proliferation, andcytokine production, thereby placing energetic and biosynthetic demandson the cell. Glutamine serves as an amine group donor for nucleotidesynthesis, and glutamate, the first component in glutamine metabolism,plays a direct role in amino acid and glutathione synthesis, as well asbeing able to enter the Krebs cycle for energy production (Carr et al.,J. Immunol., 2010). Mitogen-induced T cell proliferation and cytokineproduction require high levels of glutamine metabolism, thus inhibitingglutaminase may serve as a means of immune modulation. In multiplesclerosis, an inflammatory autoimmune disease, the activated microgliaexhibit up-regulated glutaminase and release increased levels ofextracellular glutamate. Glutamine levels are lowered by sepsis, injury,burns, surgery and endurance exercise (Calder et al., Amino Acids,1999). These situations put the individual at risk of immunosuppression.In fact, in general, glutaminase gene expression and enzyme activity areboth increased during T cell activity. Patients given glutaminefollowing bone marrow transplantation resulted in a lower level ofinfection and reduced graft v. host disease (Crowther, Proc. Nutr. Soc.,2009). T cell proliferation and activiation is involved in manyimmunological diseases, such as inflammatory bowel disease, Crohn'sdisease, sepsis, psoriasis, arthritis (including rheumatoid arthritis),multiple sclerosis, graft v. host disease, infections, lupus anddiabetes. In an embodiment of the invention, the compounds describedherein can be used to treat or prevent immunological diseases.

Hepatic encephalopathy (HE) represents a series of transient andreversible neurologic and psychiatric dysfunction in patients with liverdisease or portosystemic shunting. HE is not a single clinical entityand may reflect reversible metabolic encephalopathy, brain atrophy,brain edema, or a combination of these factors; however, the currenthypothesis is that the accumulation of ammonia, mostly derived from theintestine, plays a key role in the pathophysiology (Khunger et al., ClinLiver Dis, 2012). The deamination of glutamine in small intestine, renaland muscle synthesis all contribute to ammonia production. Impairedhepatic clearance caused by hepatocellular clearance or portosystemicshunting causes increased accumulation of ammonia Ammonia toxicityaffects astrocytes in the brain via glutamine synthetase, whichmetabolizes the ammonia to produce increased glutamine. Glutamine, inturn, attracts water into the astrocytes, leading to swelling andoxidative dysfunction of the mitochondria. The resulting cerebral edemais thought to contribute to neurologic dysfunction seen in HE (Kavitt etal., Clin Gastroenterol Hepatol, 2008). In an embodiment of theinvention, the compounds described herein can be used to treat orprevent HE.

Primary sensory neurons in the dorsal root ganglion have been shown toelevate their glutaminase enzyme activity following inflammation (Milleret al., Pain Research and Treatment, 2012). It is believed that theresulting increased glutamate production contributes to both central andperipheral sensitization, identified as pain. An aspect of the inventionis the use of the present compounds herein for the treatment ordiminishment of pain. In certain embodiments, the pain can beneuropathic pain, chemotherapy-induced pain or inflammatory pain.

High blood glucose levels, high insulin levels, and insulin resistanceare risk factors for developing diabetes mellitus. Similarly, high bloodpressure is a risk factor for developing cardiovascular disease. In arecent report from a large human cohort study, these four risk factorswere inversely correlated with glutamine-to-glutamate ratios in theblood stream (Chen et al, Circulation, 2012). Furthermore, plasmaglutamine-to-glutamate ratios were inversely correlated with theeventual incidence of diabetes mellitus over 12 years (Cheng et al,Circulation, 2012). Experiments with animal models were consistent withthese findings. Mice fed glutamine-rich diets exhibited lower bloodglucose levels in a glucose tolerance test after 6 hours of fasting, andintraperitoneal injection of glutamine into mice rapidly decreased theirblood pressure (Cheng et al, Circulation, 2012). Therefore, it isplausible that glutaminase inhibitors, which cause increased glutaminelevels and decrease glutamate levels, would decrease the incidence ofdiabetes mellitus and cardiovascular disease. In particular, the liverand small intestine are major sites of glutamine utilization in diabeticanimals, and glutaminase activity is higher than normal in these organsin streptozotocin-induced diabetic rats (Watford et al, Biochem J, 1984;Mithieux et al, Am J Physiol Endrocrinol Metab, 2004). In an embodimentof the invention, the compounds described herein can be used to treatdiabetes. In another embodiment of the invention, the present compoundscan be used to reduce high blood pressure.

In one embodiment, the method of treating or preventing cancer,immunological and neurological diseases may comprise administering acompound of the invention conjointly with a chemotherapeutic agent.Chemotherapeutic agents that may be conjointly administered withcompounds of the invention include: aminoglutethimide, amsacrine,anastrozole, asparaginase, bcg, bicalutamide, bleomycin, buserelin,busulfan, campothecin, capecitabine, carboplatin, carmustine,chlorambucil, chloroquine, cisplatin, cladribine, clodronate,colchicine, cyclophosphamide, cyproterone, cytarabine, dacarbazine,dactinomycin, daunorubicin, demethoxyviridin, dichloroacetate,dienestrol, diethylstilbestrol, docetaxel, doxorubicin, epirubicin,estradiol, estramustine, etoposide, everolimus, exemestane, filgrastim,fludarabine, fludrocortisone, fluorouracil, fluoxymesterone, flutamide,gemcitabine, genistein, goserelin, hydroxyurea, idarubicin, ifosfamide,imatinib, interferon, irinotecan, ironotecan, letrozole, leucovorin,leuprolide, levamisole, lomustine, lonidamine, mechlorethamine,medroxyprogesterone, megestrol, melphalan, mercaptopurine, mesna,metformin, methotrexate, mitomycin, mitotane, mitoxantrone, nilutamide,nocodazole, octreotide, oxaliplatin, paclitaxel, pamidronate,pentostatin, perifosine, plicamycin, porfimer, procarbazine,raltitrexed, rituximab, sorafenib, streptozocin, sunitinib, suramin,tamoxifen, temozolomide, temsirolimus, teniposide, testosterone,thioguanine, thiotepa, titanocene dichloride, topotecan, trastuzumab,tretinoin, vinblastine, vincristine, vindesine, and vinorelbine.

Many combination therapies have been developed for the treatment ofcancer. In certain embodiments, compounds of the invention may beconjointly administered with a combination therapy. Examples ofcombination therapies with which compounds of the invention may beconjointly administered are included in Table 1.

TABLE 1 Exemplary combinatorial therapies for the treatment of cancer.Name Therapeutic agents ABV Doxorubicin, Bleomycin, Vinblastine ABVDDoxorubicin, Bleomycin, Vinblastine, Dacarbazine AC (Breast)Doxorubicin, Cyclophosphamide AC (Sarcoma) Doxorubicin, Cisplatin AC(Neuroblastoma) Cyclophosphamide, Doxorubicin ACE Cyclophosphamide,Doxorubicin, Etoposide ACe Cyclophosphamide, Doxorubicin AD Doxorubicin,Dacarbazine AP Doxorubicin, Cisplatin ARAC-DNR Cytarabine, DaunorubicinB-CAVe Bleomycin, Lomustine, Doxorubicin, Vinblastine BCVPP Carmustine,Cyclophosphamide, Vinblastine, Procarbazine, Prednisone BEACOPPBleomycin, Etoposide, Doxorubicin, Cyclophosphamide, Vincristine,Procarbazine, Prednisone, Filgrastim BEP Bleomycin, Etoposide, CisplatinBIP Bleomycin, Cisplatin, Ifosfamide, Mesna BOMP Bleomycin, Vincristine,Cisplatin, Mitomycin CA Cytarabine, Asparaginase CABO Cisplatin,Methotrexate, Bleomycin, Vincristine CAF Cyclophosphamide, Doxorubicin,Fluorouracil CAL-G Cyclophosphamide, Daunorubicin, Vincristine,Prednisone, Asparaginase CAMP Cyclophosphamide, Doxorubicin,Methotrexate, Procarbazine CAP Cyclophosphamide, Doxorubicin, CisplatinCaT Carboplatin, Paclitaxel CAV Cyclophosphamide, Doxorubicin,Vincristine CAVE ADD CAV and Etoposide CA-VP16 Cyclophosphamide,Doxorubicin, Etoposide CC Cyclophosphamide, Carboplatin CDDP/VP-16Cisplatin, Etoposide CEF Cyclophosphamide, Epirubicin, FluorouracilCEPP(B) Cyclophosphamide, Etoposide, Prednisone, with orwithout/Bleomycin CEV Cyclophosphamide, Etoposide, Vincristine CFCisplatin, Fluorouracil or Carboplatin Fluorouracil CHAPCyclophosphamide or Cyclophosphamide, Altretamine, Doxorubicin,Cisplatin ChlVPP Chlorambucil, Vinblastine, Procarbazine, PrednisoneCHOP Cyclophosphamide, Doxorubicin, Vincristine, Prednisone CHOP-BLEOAdd Bleomycin to CHOP CISCA Cyclophosphamide, Doxorubicin, CisplatinCLD-BOMP Bleomycin, Cisplatin, Vincristine, Mitomycin CMF Methotrexate,Fluorouracil, Cyclophosphamide CMFP Cyclophosphamide, Methotrexate,Fluorouracil, Prednisone CMFVP Cyclophosphamide, Methotrexate,Fluorouracil, Vincristine, Prednisone CMV Cisplatin, Methotrexate,Vinblastine CNF Cyclophosphamide, Mitoxantrone, Fluorouracil CNOPCyclophosphamide, Mitoxantrone, Vincristine, Prednisone COB Cisplatin,Vincristine, Bleomycin CODE Cisplatin, Vincristine, Doxorubicin,Etoposide COMLA Cyclophosphamide, Vincristine, Methotrexate, Leucovorin,Cytarabine COMP Cyclophosphamide, Vincristine, Methotrexate, PrednisoneCooper Regimen Cyclophosphamide, Methotrexate, Fluorouracil,Vincristine, Prednisone COP Cyclophosphamide, Vincristine, PrednisoneCOPE Cyclophosphamide, Vincristine, Cisplatin, Etoposide COPPCyclophosphamide, Vincristine, Procarbazine, Prednisone CP(ChronicChlorambucil, Prednisone lymphocytic leukemia) CP (Ovarian Cancer)Cyclophosphamide, Cisplatin CT Cisplatin, Paclitaxel CVD Cisplatin,Vinblastine, Dacarbazine CVI Carboplatin, Etoposide, Ifosfamide, MesnaCVP Cyclophosphamide, Vincristine, Prednisome CVPP Lomustine,Procarbazine, Prednisone CYVADIC Cyclophosphamide, Vincristine,Doxorubicin, Dacarbazine DA Daunorubicin, Cytarabine DAT Daunorubicin,Cytarabine, Thioguanine DAV Daunorubicin, Cytarabine, Etoposide DCTDaunorubicin, Cytarabine, Thioguanine DHAP Cisplatin, Cytarabine,Dexamethasone DI Doxorubicin, Ifosfamide DTIC/Tamoxifen Dacarbazine,Tamoxifen DVP Daunorubicin, Vincristine, Prednisone EAP Etoposide,Doxorubicin, Cisplatin EC Etoposide, Carboplatin EFP Etoposie,Fluorouracil, Cisplatin ELF Etoposide, Leucovorin, Fluorouracil EMA 86Mitoxantrone, Etoposide, Cytarabine EP Etoposide, Cisplatin EVAEtoposide, Vinblastine FAC Fluorouracil, Doxorubicin, CyclophosphamideFAM Fluorouracil, Doxorubicin, Mitomycin FAMTX Methotrexate, Leucovorin,Doxorubicin FAP Fluorouracil, Doxorubicin, Cisplatin F-CL Fluorouracil,Leucovorin FEC Fluorouracil, Cyclophosphamide, Epirubicin FEDFluorouracil, Etoposide, Cisplatin FL Flutamide, Leuprolide FZFlutamide, Goserelin acetate implant HDMTX Methotrexate, LeucovorinHexa-CAF Altretamine, Cyclophosphamide, Methotrexate, Fluorouracil ICE-TIfosfamide, Carboplatin, Etoposide, Paclitaxel, Mesna IDMTX/6-MPMethotrexate, Mercaptopurine, Leucovorin IE Ifosfamide, Etoposie, MesnaIfoVP Ifosfamide, Etoposide, Mesna IPA Ifosfamide, Cisplatin,Doxorubicin M-2 Vincristine, Carmustine, Cyclophosphamide, Prednisone,Melphalan MAC-III Methotrexate, Leucovorin, Dactinomycin,Cyclophosphamide MACC Methotrexate, Doxorubicin, Cyclophosphamide,Lomustine MACOP-B Methotrexate, Leucovorin, Doxorubicin,Cyclophosphamide, Vincristine, Bleomycin, Prednisone MAID Mesna,Doxorubicin, Ifosfamide, Dacarbazine m-BACOD Bleomycin, Doxorubicin,Cyclophosphamide, Vincristine, Dexamethasone, Methotrexate, LeucovorinMBC Methotrexate, Bleomycin, Cisplatin MC Mitoxantrone, Cytarabine MFMethotrexate, Fluorouracil, Leucovorin MICE Ifosfamide, Carboplatin,Etoposide, Mesna MINE Mesna, Ifosfamide, Mitoxantrone, Etoposidemini-BEAM Carmustine, Etoposide, Cytarabine, Melphalan MOBP Bleomycin,Vincristine, Cisplatin, Mitomycin MOP Mechlorethamine, Vincristine,Procarbazine MOPP Mechlorethamine, Vincristine, Procarbazine, PrednisoneMOPP/ABV Mechlorethamine, Vincristine, Procarbazine, Prednisone,Doxorubicin, Bleomycin, Vinblastine MP (multiple Melphalan, Prednisonemyeloma) MP (prostate cancer) Mitoxantrone, Prednisone MTX/6-MOMethotrexate, Mercaptopurine MTX/6-MP/VP Methotrexate, Mercaptopurine,Vincristine, Prednisone MTX-CDDPAdr Methotrexate, Leucovorin, Cisplatin,Doxorubicin MV (breast cancer) Mitomycin, Vinblastine MV (acutemyelocytic Mitoxantrone, Etoposide leukemia) M-VAC MethotrexateVinblastine, Doxorubicin, Cisplatin MVP Mitomycin Vinblastine, CisplatinMVPP Mechlorethamine, Vinblastine, Procarbazine, Prednisone NFLMitoxantrone, Fluorouracil, Leucovorin NOVP Mitoxantrone, Vinblastine,Vincristine OPA Vincristine, Prednisone, Doxorubicin OPPA AddProcarbazine to OPA. PAC Cisplatin, Doxorubicin PAC-I Cisplatin,Doxorubicin, Cyclophosphamide PA-CI Cisplatin, Doxorubicin PCPaclitaxel, Carboplatin or Paclitaxel, Cisplatin PCV Lomustine,Procarbazine, Vincristine PE Paclitaxel, Estramustine PFL Cisplatin,Fluorouracil, Leucovorin POC Prednisone, Vincristine, Lomustine ProMACEPrednisone, Methotrexate, Leucovorin, Doxorubicin, Cyclophosphamide,Etoposide ProMACE/cytaBOM Prednisone, Doxorubicin, Cyclophosphamide,Etoposide, Cytarabine, Bleomycin, Vincristine, Methotrexate, Leucovorin,Cotrimoxazole PRoMACE/MOPP Prednisone, Doxorubicin, Cyclophosphamide,Etoposide, Mechlorethamine, Vincristine, Procarbazine, Methotrexate,Leucovorin Pt/VM Cisplatin, Teniposide PVA Prednisone, Vincristine,Asparaginase PVB Cisplatin, Vinblastine, Bleomycin PVDA Prednisone,Vincristine, Daunorubicin, Asparaginase SMF Streptozocin, Mitomycin,Fluorouracil TAD Mechlorethamine, Doxorubicin, Vinblastine, Vincristine,Bleomycin, Etoposide, Prednisone TCF Paclitaxel, Cisplatin, FluorouracilTIP Paclitaxel, Ifosfamide, Mesna, Cisplatin TTT Methotrexate,Cytarabine, Hydrocortisone Topo/CTX Cyclophosphamide, Topotecan, MesnaVAB-6 Cyclophosphamide, Dactinomycin, Vinblastine, Cisplatin, BleomycinVAC Vincristine, Dactinomycin, Cyclophosphamide VACAdr Vincristine,Cyclophosphamide, Doxorubicin, Dactinomycin, Vincristine VADVincristine, Doxorubicin, Dexamethasone VATH Vinblastine, Doxorubicin,Thiotepa, Flouxymesterone VBAP Vincristine, Carmustine, Doxorubicin,Prednisone VBCMP Vincristine, Carmustine, Melphalan, Cyclophosphamide,Prednisone VC Vinorelbine, Cisplatin VCAP Vincristine, Cyclophosphamide,Doxorubicin, Prednisone VD Vinorelbine, Doxorubicin VelP Vinblastine,Cisplatin, Ifosfamide, Mesna VIP Etoposide, Cisplatin, Ifosfamide, MesnaVM Mitomycin, Vinblastine VMCP Vincristine, Melphalan, Cyclophosphamide,Prednisone VP Etoposide, Cisplatin V-TAD Etoposide, Thioguanine,Daunorubicin, Cytarabine 5 + 2 Cytarabine, Daunorubicin, Mitoxantrone7 + 3 Cytarabine with/, Daunorubicin or Idarubicin or Mitoxantrone “8 in1” Methylprednisolone, Vincristine, Lomustine, Procarbazine,Hydroxyurea, Cisplatin, Cytarabine, Dacarbazine

The proliferation of cancer cells requires lipid synthesis. Normally,acetyl-coA used for lipid synthesis is formed from a mitochondrial poolof pyruvate that is derived from glycolysis. Yet under hypoxicconditions, such as those normally found in a tumor environment, theconversion of pyruvate to acetyl-coA within the mitochondria isdownregulated. Recent studies from Metallo et al. (2011) and Mullen etal. (2011) revealed that under such hypoxic conditions, cells insteadlargely switch to using a pathway involving the reductive carboxylationof alpha-ketoglutarate to make acetyl-coA for lipid synthesis. The firststep in this pathway involves converting glutamine to glutamate viaglutaminase enzymes. Subsequently, glutamate is converting toalpha-ketoglutarate, and the resulting alpha-ketoglutarate is convertedto isocitrate in a reductive carboxylation step mediated by theisocitrate dehydrogenase enzymes. A switch to this reductivecarboxylation pathway also occurs in some renal carcinoma cell linesthat contain either impaired mitochondria or an impaired signal forinduction of the enzyme responsible for converting glycolytic pyruvateto acetyl-coA (Mullen et al 2011). A similar switch occurs in cellsexposed to mitochondrial respiratory chain inhibitors such as metformin,rotenone, and antimycin (Mullen at al. 2011). Therefore, in someembodiments of this invention, we propose using combinations ofmitochondrial respiratory chain inhibitors and glutaminase inhibitors tosimultaneously increase cancer cells' dependence onglutaminase-dependent pathways for lipid synthesis while inhibitingthose very pathways.

The increased dependence on glycolysis in tumor cells is likely becausethe hypoxic tumor environment impairs mitochondrial respiration.Furthermore, depletion of glucose induces apoptosis in cells transformedwith the MYC oncogene. These findings suggest that inhibiting glycolysiswould have a therapeutic value in preventing cancer cell proliferation.There are currently many documented glycolytic inhibitors (Pelicano etal. 2006). However, as pointed out by Zhao et al. (2012), “availableglycolytic inhibitors are generally not very potent, and high doses arerequired, which may cause high levels of systemic toxicity.” Sincecancer cells typically use both glucose and glutamine at higher levelsthan normal cells, impairing utilization of each of those metaboliteswill likely have a synergistic effect. Therefore, in some embodiments ofthis invention, we propose using combinations of glycolytic pathwayinhibitors and glutaminase inhibitors. Such glycolytic inhibitorsinclude 2-deoxyglucose, lonidamine, 3-bromopyruvate, imatinib,oxythiamine, rapamycin, and their pharmacological equivalents.Glycolysis can be inhibited indirectly by depleting NAD+ via DNA damageinduced by DNA alkylating agents through a pathway activated bypoly(ADP-ribose) polymerase (Zong et al. 2004). Therefore, in oneembodiment of this invention, we propose using a combination of DNAalkylating agents and glutaminase inhibitors. Cancer cells use thepentose phosphate pathway along with the glycolytic pathway to createmetabolic intermediates derived from glucose. Therefore, in anotherembodiment of this invention, we propose using a combination of pentosephosphate inhibitors such as 6-aminonicotinamide along with glutaminaseinhibitors.

In certain embodiments, a compound of the invention may be conjointlyadministered with non-chemical methods of cancer treatment. In certainembodiments, a compound of the invention may be conjointly administeredwith radiation therapy. In certain embodiments, a compound of theinvention may be conjointly administered with surgery, withthermoablation, with focused ultrasound therapy, with cryotherapy, orwith any combination of these.

In certain embodiments, different compounds of the invention may beconjointly administered with one or more other compounds of theinvention. Moreover, such combinations may be conjointly administeredwith other therapeutic agents, such as other agents suitable for thetreatment of cancer, immunological or neurological diseases, such as theagents identified above.

In certain embodiments, the present invention provides a kit comprising:a) one or more single dosage forms of a compound of the invention; b)one or more single dosage forms of a chemotherapeutic agent as mentionedabove; and c) instructions for the administration of the compound of theinvention and the chemotherapeutic agent.

The present invention provides a kit comprising:

-   -   a) a pharmaceutical formulation (e.g., one or more single dosage        forms) comprising a compound of the invention; and    -   b) instructions for the administration of the pharmaceutical        formulation, e.g., for treating or preventing any of the        conditions discussed above.

In certain embodiments, the kit further comprises instructions for theadministration of the pharmaceutical formulation comprising a compoundof the invention conjointly with a chemotherapeutic agent as mentionedabove. In certain embodiments, the kit further comprises a secondpharmaceutical formulation (e.g., as one or more single dosage forms)comprising a chemotherapeutic agent as mentioned above.

Definitions

The term “acyl” is art-recognized and refers to a group represented bythe general formula hydrocarbylC(O)—, preferably alkylC(O)—.

The term “acylamino” is art-recognized and refers to an amino groupsubstituted with an acyl group and may be represented, for example, bythe formula hydrocarbylC(O)NH—.

The term “acyloxy” is art-recognized and refers to a group representedby the general formula hydrocarbylC(O)O—, preferably alkylC(O)O—.

The term “alkoxy” refers to an alkyl group, preferably a lower alkylgroup, having an oxygen attached thereto. Representative alkoxy groupsinclude methoxy, ethoxy, propoxy, tert-butoxy and the like.

The term “alkoxyalkyl” refers to an alkyl group substituted with analkoxy group and may be represented by the general formulaalkyl-O-alkyl.

The term “alkenyl”, as used herein, refers to an aliphatic groupcontaining at least one double bond and is intended to include both“unsubstituted alkenyls” and “substituted alkenyls”, the latter of whichrefers to alkenyl moieties having substituents replacing a hydrogen onone or more carbons of the alkenyl group. Such substituents may occur onone or more carbons that are included or not included in one or moredouble bonds. Moreover, such substituents include all those contemplatedfor alkyl groups, as discussed below, except where stability isprohibitive. For example, substitution of alkenyl groups by one or morealkyl, carbocyclyl, aryl, heterocyclyl, or heteroaryl groups iscontemplated.

An “alkyl” group or “alkane” is a straight chained or branchednon-aromatic hydrocarbon which is completely saturated. Typically, astraight chained or branched alkyl group has from 1 to about 20 carbonatoms, preferably from 1 to about 10 unless otherwise defined. Examplesof straight chained and branched alkyl groups include methyl, ethyl,n-propyl, iso-propyl, n-butyl, sec-butyl, tert-butyl, pentyl, hexyl,pentyl and octyl. A C₁-C₆ straight chained or branched alkyl group isalso referred to as a “lower alkyl” group.

Moreover, the term “alkyl” (or “lower alkyl”) as used throughout thespecification, examples, and claims is intended to include both“unsubstituted alkyls” and “substituted alkyls”, the latter of whichrefers to alkyl moieties having substituents replacing a hydrogen on oneor more carbons of the hydrocarbon backbone. Such substituents, if nototherwise specified, can include, for example, a halogen, a hydroxyl, acarbonyl (such as a carboxyl, an alkoxycarbonyl, a formyl, or an acyl),a thiocarbonyl (such as a thioester, a thioacetate, or a thioformate),an alkoxyl, a phosphoryl, a phosphate, a phosphonate, a phosphinate, anamino, an amido, an amidine, an imine, a cyano, a nitro, an azido, asulfhydryl, an alkylthio, a sulfate, a sulfonate, a sulfamoyl, asulfonamido, a sulfonyl, a heterocyclyl, an aralkyl, or an aromatic orheteroaromatic moiety. It will be understood by those skilled in the artthat the moieties substituted on the hydrocarbon chain can themselves besubstituted, if appropriate. For instance, the substituents of asubstituted alkyl may include substituted and unsubstituted forms ofamino, azido, imino, amido, phosphoryl (including phosphonate andphosphinate), sulfonyl (including sulfate, sulfonamido, sulfamoyl andsulfonate), and silyl groups, as well as ethers, alkylthios, carbonyls(including ketones, aldehydes, carboxylates, and esters), —CF₃, —CN andthe like. Exemplary substituted alkyls are described below. Cycloalkylscan be further substituted with alkyls, alkenyls, alkoxys, alkylthios,aminoalkyls, carbonyl-substituted alkyls, —CF₃, —CN, and the like.

The term “C_(x-y)” when used in conjunction with a chemical moiety, suchas, acyl, acyloxy, alkyl, alkenyl, alkynyl, or alkoxy is meant toinclude groups that contain from x to y carbons in the chain. Forexample, the term “C_(x-y)alkyl” refers to substituted or unsubstitutedsaturated hydrocarbon groups, including straight-chain alkyl andbranched-chain alkyl groups that contain from x to y carbons in thechain, including haloalkyl groups such as trifluoromethyl and2,2,2-tirfluoroethyl, etc. C₀ alkyl indicates a hydrogen where the groupis in a terminal position, a bond if internal. The terms“C_(2-y)alkenyl” and “C_(2-y)alkynyl” refer to substituted orunsubstituted unsaturated aliphatic groups analogous in length andpossible substitution to the alkyls described above, but that contain atleast one double or triple bond respectively.

The term “alkylamino”, as used herein, refers to an amino groupsubstituted with at least one alkyl group.

The term “alkylthio”, as used herein, refers to a thiol groupsubstituted with an alkyl group and may be represented by the generalformula alkylS—.

The term “alkynyl”, as used herein, refers to an aliphatic groupcontaining at least one triple bond and is intended to include both“unsubstituted alkynyls” and “substituted alkynyls”, the latter of whichrefers to alkynyl moieties having substituents replacing a hydrogen onone or more carbons of the alkynyl group. Such substituents may occur onone or more carbons that are included or not included in one or moretriple bonds. Moreover, such substituents include all those contemplatedfor alkyl groups, as discussed above, except where stability isprohibitive. For example, substitution of alkynyl groups by one or morealkyl, carbocyclyl, aryl, heterocyclyl, or heteroaryl groups iscontemplated.

The term “amide”, as used herein, refers to a group

wherein each R¹⁰ independently represent a hydrogen or hydrocarbylgroup, or two R¹⁰ are taken together with the N atom to which they areattached complete a heterocycle having from 4 to 8 atoms in the ringstructure.

The terms “amine” and “amino” are art-recognized and refer to bothunsubstituted and substituted amines and salts thereof, e.g., a moietythat can be represented by

wherein each R¹⁰ independently represents a hydrogen or a hydrocarbylgroup, or two R¹⁰ are taken together with the N atom to which they areattached complete a heterocycle having from 4 to 8 atoms in the ringstructure.

The term “aminoalkyl”, as used herein, refers to an alkyl groupsubstituted with an amino group.

The term “aralkyl”, as used herein, refers to an alkyl group substitutedwith an aryl group.

The term “aryl” as used herein include substituted or unsubstitutedsingle-ring aromatic groups in which each atom of the ring is carbon.Preferably the ring is a 5- to 7-membered ring, more preferably a6-membered ring. The term “aryl” also includes polycyclic ring systemshaving two or more cyclic rings in which two or more carbons are commonto two adjoining rings wherein at least one of the rings is aromatic,e.g., the other cyclic rings can be cycloalkyls, cycloalkenyls,cycloalkynyls, aryls, heteroaryls, and/or heterocyclyls. Aryl groupsinclude benzene, naphthalene, phenanthrene, phenol, aniline, and thelike.

The term “carbamate” is art-recognized and refers to a group

wherein R⁹ and R¹⁰ independently represent hydrogen or a hydrocarbylgroup, such as an alkyl group, or R⁹ and R¹⁰ taken together with theintervening atom(s) complete a heterocycle having from 4 to 8 atoms inthe ring structure.

The terms “carbocycle”, and “carbocyclic”, as used herein, refers to asaturated or unsaturated ring in which each atom of the ring is carbon.The term carbocycle includes both aromatic carbocycles and non-aromaticcarbocycles. Non-aromatic carbocycles include both cycloalkane rings, inwhich all carbon atoms are saturated, and cycloalkene rings, whichcontain at least one double bond. “Carbocycle” includes 5-7 memberedmonocyclic and 8-12 membered bicyclic rings. Each ring of a bicycliccarbocycle may be selected from saturated, unsaturated and aromaticrings. Carbocycle includes bicyclic molecules in which one, two or threeor more atoms are shared between the two rings. The term “fusedcarbocycle” refers to a bicyclic carbocycle in which each of the ringsshares two adjacent atoms with the other ring. Each ring of a fusedcarbocycle may be selected from saturated, unsaturated and aromaticrings. In an exemplary embodiment, an aromatic ring, e.g., phenyl, maybe fused to a saturated or unsaturated ring, e.g., cyclohexane,cyclopentane, or cyclohexene. Any combination of saturated, unsaturatedand aromatic bicyclic rings, as valence permits, is included in thedefinition of carbocyclic. Exemplary “carbocycles” include cyclopentane,cyclohexane, bicyclo[2.2.1]heptane, 1,5-cyclooctadiene,1,2,3,4-tetrahydronaphthalene, bicyclo[4.2.0]oct-3-ene, naphthalene andadamantane. Exemplary fused carbocycles include decalin, naphthalene,1,2,3,4-tetrahydronaphthalene, bicyclo[4.2.0]octane,4,5,6,7-tetrahydro-1H-indene and bicyclo[4.1.0]hept-3-ene. “Carbocycles”may be substituted at any one or more positions capable of bearing ahydrogen atom.

A “cycloalkyl” group is a cyclic hydrocarbon which is completelysaturated. “Cycloalkyl” includes monocyclic and bicyclic rings.Typically, a monocyclic cycloalkyl group has from 3 to about 10 carbonatoms, more typically 3 to 8 carbon atoms unless otherwise defined. Thesecond ring of a bicyclic cycloalkyl may be selected from saturated,unsaturated and aromatic rings. Cycloalkyl includes bicyclic moleculesin which one, two or three or more atoms are shared between the tworings. The term “fused cycloalkyl” refers to a bicyclic cycloalkyl inwhich each of the rings shares two adjacent atoms with the other ring.The second ring of a fused bicyclic cycloalkyl may be selected fromsaturated, unsaturated and aromatic rings. A “cycloalkenyl” group is acyclic hydrocarbon containing one or more double bonds.

The term “carbocyclylalkyl”, as used herein, refers to an alkyl groupsubstituted with a carbocycle group.

The term “carbonate” is art-recognized and refers to a group —OCO₂—R¹⁰,wherein R¹⁰ represents a hydrocarbyl group.

The term “carboxy”, as used herein, refers to a group represented by theformula —CO₂H.

The term “ester”, as used herein, refers to a group —C(O)OR¹⁰ whereinR¹⁰ represents a hydrocarbyl group.

The term “ether”, as used herein, refers to a hydrocarbyl group linkedthrough an oxygen to another hydrocarbyl group. Accordingly, an ethersubstituent of a hydrocarbyl group may be hydrocarbyl-O—. Ethers may beeither symmetrical or unsymmetrical. Examples of ethers include, but arenot limited to, heterocycle-O-heterocycle and aryl-O-heterocycle. Ethersinclude “alkoxyalkyl” groups, which may be represented by the generalformula alkyl-O-alkyl.

The terms “halo” and “halogen” as used herein means halogen and includeschloro, fluoro, bromo, and iodo.

The terms “hetaralkyl” and “heteroaralkyl”, as used herein, refers to analkyl group substituted with a hetaryl group.

The term “heteroalkyl”, as used herein, refers to a saturated orunsaturated chain of carbon atoms and at least one heteroatom, whereinno two heteroatoms are adjacent.

The terms “heteroaryl” and “hetaryl” include substituted orunsubstituted aromatic single ring structures, preferably 5- to7-membered rings, more preferably 5- to 6-membered rings, whose ringstructures include at least one heteroatom, preferably one to fourheteroatoms, more preferably one or two heteroatoms. The terms“heteroaryl” and “hetaryl” also include polycyclic ring systems havingtwo or more cyclic rings in which two or more carbons are common to twoadjoining rings wherein at least one of the rings is heteroaromatic,e.g., the other cyclic rings can be cycloalkyls, cycloalkenyls,cycloalkynyls, aryls, heteroaryls, and/or heterocyclyls. Heteroarylgroups include, for example, pyrrole, furan, thiophene, imidazole,oxazole, thiazole, pyrazole, pyridine, pyrazine, pyridazine, andpyrimidine, and the like.

The term “heteroatom” as used herein means an atom of any element otherthan carbon or hydrogen. Preferred heteroatoms are nitrogen, oxygen, andsulfur.

The terms “heterocyclyl”, “heterocycle”, and “heterocyclic” refer tosubstituted or unsubstituted non-aromatic ring structures, preferably 3-to 10-membered rings, more preferably 3- to 7-membered rings, whose ringstructures include at least one heteroatom, preferably one to fourheteroatoms, more preferably one or two heteroatoms. The terms“heterocyclyl” and “heterocyclic” also include polycyclic ring systemshaving two or more cyclic rings in which two or more carbons are commonto two adjoining rings wherein at least one of the rings isheterocyclic, e.g., the other cyclic rings can be cycloalkyls,cycloalkenyls, cycloalkynyls, aryls, heteroaryls, and/or heterocyclyls.Heterocyclyl groups include, for example, piperidine, piperazine,pyrrolidine, morpholine, lactones, lactams, and the like.

The term “heterocyclylalkyl”, as used herein, refers to an alkyl groupsubstituted with a heterocycle group.

The term “hydrocarbyl”, as used herein, refers to a group that is bondedthrough a carbon atom that does not have a ═O or =S substituent, andtypically has at least one carbon-hydrogen bond and a primarily carbonbackbone, but may optionally include heteroatoms. Thus, groups likemethyl, ethoxyethyl, 2-pyridyl, and trifluoromethyl are considered to behydrocarbyl for the purposes of this application, but substituents suchas acetyl (which has a ═O substituent on the linking carbon) and ethoxy(which is linked through oxygen, not carbon) are not. Hydrocarbyl groupsinclude, but are not limited to aryl, heteroaryl, carbocycle,heterocyclyl, alkyl, alkenyl, alkynyl, and combinations thereof.

The term “hydroxyalkyl”, as used herein, refers to an alkyl groupsubstituted with a hydroxy group.

The term “lower” when used in conjunction with a chemical moiety, suchas, acyl, acyloxy, alkyl, alkenyl, alkynyl, or alkoxy is meant toinclude groups where there are ten or fewer non-hydrogen atoms in thesubstituent, preferably six or fewer. A “lower alkyl”, for example,refers to an alkyl group that contains ten or fewer carbon atoms,preferably six or fewer. In certain embodiments, acyl, acyloxy, alkyl,alkenyl, alkynyl, or alkoxy substituents defined herein are respectivelylower acyl, lower acyloxy, lower alkyl, lower alkenyl, lower alkynyl, orlower alkoxy, whether they appear alone or in combination with othersubstituents, such as in the recitations hydroxyalkyl and aralkyl (inwhich case, for example, the atoms within the aryl group are not countedwhen counting the carbon atoms in the alkyl substituent).

The terms “polycyclyl”, “polycycle”, and “polycyclic” refer to two ormore rings (e.g., cycloalkyls, cycloalkenyls, cycloalkynyls, aryls,heteroaryls, and/or heterocyclyls) in which two or more atoms are commonto two adjoining rings, e.g., the rings are “fused rings”. Each of therings of the polycycle can be substituted or unsubstituted. In certainembodiments, each ring of the polycycle contains from 3 to 10 atoms inthe ring, preferably from 5 to 7.

The term “silyl” refers to a silicon moiety with three hydrocarbylmoieties attached thereto.

The term “substituted” refers to moieties having substituents replacinga hydrogen on one or more carbons of the backbone. It will be understoodthat “substitution” or “substituted with” includes the implicit provisothat such substitution is in accordance with permitted valence of thesubstituted atom and the substituent, and that the substitution resultsin a stable compound, e.g., which does not spontaneously undergotransformation such as by rearrangement, cyclization, elimination, etc.As used herein, the term “substituted” is contemplated to include allpermissible substituents of organic compounds. In a broad aspect, thepermissible substituents include acyclic and cyclic, branched andunbranched, carbocyclic and heterocyclic, aromatic and non-aromaticsubstituents of organic compounds. The permissible substituents can beone or more and the same or different for appropriate organic compounds.For purposes of this invention, the heteroatoms such as nitrogen mayhave hydrogen substituents and/or any permissible substituents oforganic compounds described herein which satisfy the valences of theheteroatoms.

Substituents can include any substituents described herein, for example,a halogen, a hydroxyl, a carbonyl (such as a carboxyl, analkoxycarbonyl, a formyl, or an acyl), a thiocarbonyl (such as athioester, a thioacetate, or a thioformate), an alkoxyl, a phosphoryl, aphosphate, a phosphonate, a phosphinate, an amino, an amido, an amidine,an imine, a cyano, a nitro, an azido, a sulfhydryl, an alkylthio, asulfate, a sulfonate, a sulfamoyl, a sulfonamido, a sulfonyl, aheterocyclyl, an aralkyl, or an aromatic or heteroaromatic moiety. Itwill be understood by those skilled in the art that substituents canthemselves be substituted, if appropriate. Unless specifically stated as“unsubstituted,” references to chemical moieties herein are understoodto include substituted variants. For example, reference to an “aryl”group or moiety implicitly includes both substituted and unsubstitutedvariants.

The term “sulfate” is art-recognized and refers to the group —OSO₃H, ora pharmaceutically acceptable salt thereof.

The term “sulfonamide” is art-recognized and refers to the grouprepresented by the general formulae

wherein R⁹ and R¹⁰ independently represents hydrogen or hydrocarbyl,such as alkyl, or R⁹ and R¹⁰ taken together with the intervening atom(s)complete a heterocycle having from 4 to 8 atoms in the ring structure.

The term “sulfoxide” is art-recognized and refers to the group—S(O)—R¹⁰, wherein R¹⁰ represents a hydrocarbyl.

The term “sulfonate” is art-recognized and refers to the group SO₃H, ora pharmaceutically acceptable salt thereof.

The term “sulfone” is art-recognized and refers to the group —S(O)₂—R¹⁰,wherein R¹⁰ represents a hydrocarbyl.

The term “thioalkyl”, as used herein, refers to an alkyl groupsubstituted with a thiol group.

The term “thioester”, as used herein, refers to a group —C(O)SR¹⁰ or—SC(O)R¹⁰ wherein R¹⁰ represents a hydrocarbyl.

The term “thioether”, as used herein, is equivalent to an ether, whereinthe oxygen is replaced with a sulfur.

The term “urea” is art-recognized and may be represented by the generalformula

wherein R⁹ and R¹⁰ independently represent hydrogen or a hydrocarbyl,such as alkyl, or either occurrence of R⁹ taken together with R¹⁰ andthe intervening atom(s) complete a heterocycle having from 4 to 8 atomsin the ring structure.

“Protecting group” refers to a group of atoms that, when attached to areactive functional group in a molecule, mask, reduce or prevent thereactivity of the functional group. Typically, a protecting group may beselectively removed as desired during the course of a synthesis.Examples of protecting groups can be found in Greene and Wuts,Protective Groups in Organic Chemistry, 3^(rd) Ed., 1999, John Wiley &Sons, NY and Harrison et al., Compendium of Synthetic Organic Methods,Vols. 1-8, 1971-1996, John Wiley & Sons, NY. Representative nitrogenprotecting groups include, but are not limited to, formyl, acetyl,trifluoroacetyl, benzyl, benzyloxycarbonyl (“CBZ”), tert-butoxycarbonyl(“Boc”), trimethylsilyl (“TMS”), 2-trimethylsilyl-ethanesulfonyl(“TES”), trityl and substituted trityl groups, allyloxycarbonyl,9-fluorenylmethyloxycarbonyl (“FMOC”), nitro-veratryloxycarbonyl(“NVOC”) and the like. Representative hydroxylprotecting groups include,but are not limited to, those where the hydroxyl group is eitheracylated (esterified) or alkylated such as benzyl and trityl ethers, aswell as alkyl ethers, tetrahydropyranyl ethers, trialkylsilyl ethers(e.g., TMS or TIPS groups), glycol ethers, such as ethylene glycol andpropylene glycol derivatives and allyl ethers.

The term “healthcare providers” refers to individuals or organizationsthat provide healthcare services to a person, community, etc. Examplesof “healthcare providers” include doctors, hospitals, continuing careretirement communities, skilled nursing facilities, subacute carefacilities, clinics, multispecialty clinics, freestanding ambulatorycenters, home health agencies, and HMO's.

As used herein, a therapeutic that “prevents” a disorder or conditionrefers to a compound that, in a statistical sample, reduces theoccurrence of the disorder or condition in the treated sample relativeto an untreated control sample, or delays the onset or reduces theseverity of one or more symptoms of the disorder or condition relativeto the untreated control sample.

The term “treating” includes prophylactic and/or therapeutic treatments.The term “prophylactic or therapeutic” treatment is art-recognized andincludes administration to the host of one or more of the subjectcompositions. If it is administered prior to clinical manifestation ofthe unwanted condition (e.g., disease or other unwanted state of thehost animal) then the treatment is prophylactic (i.e., it protects thehost against developing the unwanted condition), whereas if it isadministered after manifestation of the unwanted condition, thetreatment is therapeutic, (i.e., it is intended to diminish, ameliorate,or stabilize the existing unwanted condition or side effects thereof).

The term “prodrug” is intended to encompass compounds which, underphysiologic conditions, are converted into the therapeutically activeagents of the present invention (e.g., a compound of formula I). Acommon method for making a prodrug is to include one or more selectedmoieties which are hydrolyzed under physiologic conditions to reveal thedesired molecule. In other embodiments, the prodrug is converted by anenzymatic activity of the host animal. For example, esters or carbonates(e.g., esters or carbonates of alcohols or carboxylic acids) arepreferred prodrugs of the present invention. In certain embodiments,some or all of the compounds of formula I in a formulation representedabove can be replaced with the corresponding suitable prodrug, e.g.,wherein a hydroxyl in the parent compound is presented as an ester or acarbonate or carboxylic acid present in the parent compound is presentedas an ester.

Pharmaceutical Compositions

The compositions and methods of the present invention may be utilized totreat an individual in need thereof. In certain embodiments, theindividual is a mammal such as a human, or a non-human mammal. Whenadministered to an animal, such as a human, the composition or thecompound is preferably administered as a pharmaceutical compositioncomprising, for example, a compound of the invention and apharmaceutically acceptable carrier. Pharmaceutically acceptablecarriers are well known in the art and include, for example, aqueoussolutions such as water or physiologically buffered saline or othersolvents or vehicles such as glycols, glycerol, oils such as olive oil,or injectable organic esters. In a preferred embodiment, when suchpharmaceutical compositions are for human administration, particularlyfor invasive routes of administration (i.e., routes, such as injectionor implantation, that circumvent transport or diffusion through anepithelial barrier), the aqueous solution is pyrogen-free, orsubstantially pyrogen-free. The excipients can be chosen, for example,to effect delayed release of an agent or to selectively target one ormore cells, tissues or organs. The pharmaceutical composition can be indosage unit form such as tablet, capsule (including sprinkle capsule andgelatin capsule), granule, lyophile for reconstitution, powder,solution, syrup, suppository, injection or the like. The composition canalso be present in a transdermal delivery system, e.g., a skin patch.The composition can also be present in a solution suitable for topicaladministration, such as an eye drop.

A pharmaceutically acceptable carrier can contain physiologicallyacceptable agents that act, for example, to stabilize, increasesolubility or to increase the absorption of a compound such as acompound of the invention. Such physiologically acceptable agentsinclude, for example, carbohydrates, such as glucose, sucrose ordextrans, antioxidants, such as ascorbic acid or glutathione, chelatingagents, low molecular weight proteins or other stabilizers orexcipients. The choice of a pharmaceutically acceptable carrier,including a physiologically acceptable agent, depends, for example, onthe route of administration of the composition. The preparation orpharmaceutical composition can be a selfemulsifying drug delivery systemor a selfmicroemulsifying drug delivery system. The pharmaceuticalcomposition (preparation) also can be a liposome or other polymermatrix, which can have incorporated therein, for example, a compound ofthe invention. Liposomes, for example, which comprise phospholipids orother lipids, are nontoxic, physiologically acceptable and metabolizablecarriers that are relatively simple to make and administer.

The phrase “pharmaceutically acceptable” is employed herein to refer tothose compounds, materials, compositions, and/or dosage forms which are,within the scope of sound medical judgment, suitable for use in contactwith the tissues of human beings and animals without excessive toxicity,irritation, allergic response, or other problem or complication,commensurate with a reasonable benefit/risk ratio.

The phrase “pharmaceutically acceptable carrier” as used herein means apharmaceutically acceptable material, composition or vehicle, such as aliquid or solid filler, diluent, excipient, solvent or encapsulatingmaterial. Each carrier must be “acceptable” in the sense of beingcompatible with the other ingredients of the formulation and notinjurious to the patient. Some examples of materials which can serve aspharmaceutically acceptable carriers include: (1) sugars, such aslactose, glucose and sucrose; (2) starches, such as corn starch andpotato starch; (3) cellulose, and its derivatives, such as sodiumcarboxymethyl cellulose, ethyl cellulose and cellulose acetate; (4)powdered tragacanth; (5) malt; (6) gelatin; (7) talc; (8) excipients,such as cocoa butter and suppository waxes; (9) oils, such as peanutoil, cottonseed oil, safflower oil, sesame oil, olive oil, corn oil andsoybean oil; (10) glycols, such as propylene glycol; (11) polyols, suchas glycerin, sorbitol, mannitol and polyethylene glycol; (12) esters,such as ethyl oleate and ethyl laurate; (13) agar; (14) bufferingagents, such as magnesium hydroxide and aluminum hydroxide; (15) alginicacid; (16) pyrogen-free water; (17) isotonic saline; (18) Ringer'ssolution; (19) ethyl alcohol; (20) phosphate buffer solutions; and (21)other non-toxic compatible substances employed in pharmaceuticalformulations.

A pharmaceutical composition (preparation) can be administered to asubject by any of a number of routes of administration including, forexample, orally (for example, drenches as in aqueous or non-aqueoussolutions or suspensions, tablets, capsules (including sprinkle capsulesand gelatin capsules), boluses, powders, granules, pastes forapplication to the tongue); absorption through the oral mucosa (e.g.,sublingually); anally, rectally or vaginally (for example, as a pessary,cream or foam); parenterally (including intramuscularly, intravenously,subcutaneously or intrathecally as, for example, a sterile solution orsuspension); nasally; intraperitoneally; subcutaneously; transdermally(for example as a patch applied to the skin); and topically (forexample, as a cream, ointment or spray applied to the skin, or as an eyedrop). The compound may also be formulated for inhalation. In certainembodiments, a compound may be simply dissolved or suspended in sterilewater. Details of appropriate routes of administration and compositionssuitable for same can be found in, for example, U.S. Pat. Nos.6,110,973, 5,763,493, 5,731,000, 5,541,231, 5,427,798, 5,358,970 and4,172,896, as well as in patents cited therein.

The formulations may conveniently be presented in unit dosage form andmay be prepared by any methods well known in the art of pharmacy. Theamount of active ingredient which can be combined with a carriermaterial to produce a single dosage form will vary depending upon thehost being treated, the particular mode of administration. The amount ofactive ingredient that can be combined with a carrier material toproduce a single dosage form will generally be that amount of thecompound which produces a therapeutic effect. Generally, out of onehundred percent, this amount will range from about 1 percent to aboutninety-nine percent of active ingredient, preferably from about 5percent to about 70 percent, most preferably from about 10 percent toabout 30 percent.

Methods of preparing these formulations or compositions include the stepof bringing into association an active compound, such as a compound ofthe invention, with the carrier and, optionally, one or more accessoryingredients. In general, the formulations are prepared by uniformly andintimately bringing into association a compound of the present inventionwith liquid carriers, or finely divided solid carriers, or both, andthen, if necessary, shaping the product.

Formulations of the invention suitable for oral administration may be inthe form of capsules (including sprinkle capsules and gelatin capsules),cachets, pills, tablets, lozenges (using a flavored basis, usuallysucrose and acacia or tragacanth), lyophile, powders, granules, or as asolution or a suspension in an aqueous or non-aqueous liquid, or as anoil-in-water or water-in-oil liquid emulsion, or as an elixir or syrup,or as pastilles (using an inert base, such as gelatin and glycerin, orsucrose and acacia) and/or as mouth washes and the like, each containinga predetermined amount of a compound of the present invention as anactive ingredient. Compositions or compounds may also be administered asa bolus, electuary or paste.

To prepare solid dosage forms for oral administration (capsules(including sprinkle capsules and gelatin capsules), tablets, pills,dragees, powders, granules and the like), the active ingredient is mixedwith one or more pharmaceutically acceptable carriers, such as sodiumcitrate or dicalcium phosphate, and/or any of the following: (1) fillersor extenders, such as starches, lactose, sucrose, glucose, mannitol,and/or silicic acid; (2) binders, such as, for example,carboxymethylcellulose, alginates, gelatin, polyvinyl pyrrolidone,sucrose and/or acacia; (3) humectants, such as glycerol; (4)disintegrating agents, such as agar-agar, calcium carbonate, potato ortapioca starch, alginic acid, certain silicates, and sodium carbonate;(5) solution retarding agents, such as paraffin; (6) absorptionaccelerators, such as quaternary ammonium compounds; (7) wetting agents,such as, for example, cetyl alcohol and glycerol monostearate; (8)absorbents, such as kaolin and bentonite clay; (9) lubricants, such atalc, calcium stearate, magnesium stearate, solid polyethylene glycols,sodium lauryl sulfate, and mixtures thereof; (10) complexing agents,such as, modified and unmodified cyclodextrins; and (11) coloringagents. In the case of capsules (including sprinkle capsules and gelatincapsules), tablets and pills, the pharmaceutical compositions may alsocomprise buffering agents. Solid compositions of a similar type may alsobe employed as fillers in soft and hard-filled gelatin capsules usingsuch excipients as lactose or milk sugars, as well as high molecularweight polyethylene glycols and the like.

A tablet may be made by compression or molding, optionally with one ormore accessory ingredients. Compressed tablets may be prepared usingbinder (for example, gelatin or hydroxypropylmethyl cellulose),lubricant, inert diluent, preservative, disintegrant (for example,sodium starch glycolate or cross-linked sodium carboxymethyl cellulose),surface-active or dispersing agent. Molded tablets may be made bymolding in a suitable machine a mixture of the powdered compoundmoistened with an inert liquid diluent.

The tablets, and other solid dosage forms of the pharmaceuticalcompositions, such as dragees, capsules (including sprinkle capsules andgelatin capsules), pills and granules, may optionally be scored orprepared with coatings and shells, such as enteric coatings and othercoatings well known in the pharmaceutical-formulating art. They may alsobe formulated so as to provide slow or controlled release of the activeingredient therein using, for example, hydroxypropylmethyl cellulose invarying proportions to provide the desired release profile, otherpolymer matrices, liposomes and/or microspheres. They may be sterilizedby, for example, filtration through a bacteria-retaining filter, or byincorporating sterilizing agents in the form of sterile solidcompositions that can be dissolved in sterile water, or some othersterile injectable medium immediately before use. These compositions mayalso optionally contain opacifying agents and may be of a compositionthat they release the active ingredient(s) only, or preferentially, in acertain portion of the gastrointestinal tract, optionally, in a delayedmanner. Examples of embedding compositions that can be used includepolymeric substances and waxes. The active ingredient can also be inmicro-encapsulated form, if appropriate, with one or more of theabove-described excipients.

Liquid dosage forms useful for oral administration includepharmaceutically acceptable emulsions, lyophiles for reconstitution,microemulsions, solutions, suspensions, syrups and elixirs. In additionto the active ingredient, the liquid dosage forms may contain inertdiluents commonly used in the art, such as, for example, water or othersolvents, cyclodextrins and derivatives thereof, solubilizing agents andemulsifiers, such as ethyl alcohol, isopropyl alcohol, ethyl carbonate,ethyl acetate, benzyl alcohol, benzyl benzoate, propylene glycol,1,3-butylene glycol, oils (in particular, cottonseed, groundnut, corn,germ, olive, castor and sesame oils), glycerol, tetrahydrofuryl alcohol,polyethylene glycols and fatty acid esters of sorbitan, and mixturesthereof.

Besides inert diluents, the oral compositions can also include adjuvantssuch as wetting agents, emulsifying and suspending agents, sweetening,flavoring, coloring, perfuming and preservative agents.

Suspensions, in addition to the active compounds, may contain suspendingagents as, for example, ethoxylated isostearyl alcohols, polyoxyethylenesorbitol and sorbitan esters, microcrystalline cellulose, aluminummetahydroxide, bentonite, agar-agar and tragacanth, and mixturesthereof.

Formulations of the pharmaceutical compositions for rectal, vaginal, orurethral administration may be presented as a suppository, which may beprepared by mixing one or more active compounds with one or moresuitable nonirritating excipients or carriers comprising, for example,cocoa butter, polyethylene glycol, a suppository wax or a salicylate,and which is solid at room temperature, but liquid at body temperatureand, therefore, will melt in the rectum or vaginal cavity and releasethe active compound.

Formulations of the pharmaceutical compositions for administration tothe mouth may be presented as a mouthwash, or an oral spray, or an oralointment.

Alternatively or additionally, compositions can be formulated fordelivery via a catheter, stent, wire, or other intraluminal device.Delivery via such devices may be especially useful for delivery to thebladder, urethra, ureter, rectum, or intestine.

Formulations which are suitable for vaginal administration also includepessaries, tampons, creams, gels, pastes, foams or spray formulationscontaining such carriers as are known in the art to be appropriate.

Dosage forms for the topical or transdermal administration includepowders, sprays, ointments, pastes, creams, lotions, gels, solutions,patches and inhalants. The active compound may be mixed under sterileconditions with a pharmaceutically acceptable carrier, and with anypreservatives, buffers, or propellants that may be required.

The ointments, pastes, creams and gels may contain, in addition to anactive compound, excipients, such as animal and vegetable fats, oils,waxes, paraffins, starch, tragacanth, cellulose derivatives,polyethylene glycols, silicones, bentonites, silicic acid, talc and zincoxide, or mixtures thereof.

Powders and sprays can contain, in addition to an active compound,excipients such as lactose, talc, silicic acid, aluminum hydroxide,calcium silicates and polyamide powder, or mixtures of these substances.Sprays can additionally contain customary propellants, such aschlorofluorohydrocarbons and volatile unsubstituted hydrocarbons, suchas butane and propane.

Transdermal patches have the added advantage of providing controlleddelivery of a compound of the present invention to the body. Such dosageforms can be made by dissolving or dispersing the active compound in theproper medium. Absorption enhancers can also be used to increase theflux of the compound across the skin. The rate of such flux can becontrolled by either providing a rate controlling membrane or dispersingthe compound in a polymer matrix or gel.

Ophthalmic formulations, eye ointments, powders, solutions and the like,are also contemplated as being within the scope of this invention.Exemplary ophthalmic formulations are described in U.S. Publication Nos.2005/0080056, 2005/0059744, 2005/0031697 and 2005/004074 and U.S. Pat.No. 6,583,124, the contents of which are incorporated herein byreference. If desired, liquid ophthalmic formulations have propertiessimilar to that of lacrimal fluids, aqueous humor or vitreous humor orare compatable with such fluids. A preferred route of administration islocal administration (e.g., topical administration, such as eye drops,or administration via an implant).

The phrases “parenteral administration” and “administered parenterally”as used herein means modes of administration other than enteral andtopical administration, usually by injection, and includes, withoutlimitation, intravenous, intramuscular, intraarterial, intrathecal,intracapsular, intraorbital, intracardiac, intradermal, intraperitoneal,transtracheal, subcutaneous, subcuticular, intraarticular, subcapsular,subarachnoid, intraspinal and intrasternal injection and infusion.

Pharmaceutical compositions suitable for parenteral administrationcomprise one or more active compounds in combination with one or morepharmaceutically acceptable sterile isotonic aqueous or nonaqueoussolutions, dispersions, suspensions or emulsions, or sterile powderswhich may be reconstituted into sterile injectable solutions ordispersions just prior to use, which may contain antioxidants, buffers,bacteriostats, solutes which render the formulation isotonic with theblood of the intended recipient or suspending or thickening agents.

Examples of suitable aqueous and nonaqueous carriers that may beemployed in the pharmaceutical compositions of the invention includewater, ethanol, polyols (such as glycerol, propylene glycol,polyethylene glycol, and the like), and suitable mixtures thereof,vegetable oils, such as olive oil, and injectable organic esters, suchas ethyl oleate. Proper fluidity can be maintained, for example, by theuse of coating materials, such as lecithin, by the maintenance of therequired particle size in the case of dispersions, and by the use ofsurfactants.

These compositions may also contain adjuvants such as preservatives,wetting agents, emulsifying agents and dispersing agents. Prevention ofthe action of microorganisms may be ensured by the inclusion of variousantibacterial and antifungal agents, for example, paraben,chlorobutanol, phenol sorbic acid, and the like. It may also bedesirable to include isotonic agents, such as sugars, sodium chloride,and the like into the compositions. In addition, prolonged absorption ofthe injectable pharmaceutical form may be brought about by the inclusionof agents that delay absorption such as aluminum monostearate andgelatin.

In some cases, in order to prolong the effect of a drug, it is desirableto slow the absorption of the drug from subcutaneous or intramuscularinjection. This may be accomplished by the use of a liquid suspension ofcrystalline or amorphous material having poor water solubility. The rateof absorption of the drug then depends upon its rate of dissolution,which, in turn, may depend upon crystal size and crystalline form.Alternatively, delayed absorption of a parenterally administered drugform is accomplished by dissolving or suspending the drug in an oilvehicle.

Injectable depot forms are made by forming microencapsulated matrices ofthe subject compounds in biodegradable polymers such aspolylactide-polyglycolide. Depending on the ratio of drug to polymer,and the nature of the particular polymer employed, the rate of drugrelease can be controlled. Examples of other biodegradable polymersinclude poly(orthoesters) and poly(anhydrides). Depot injectableformulations are also prepared by entrapping the drug in liposomes ormicroemulsions that are compatible with body tissue.

For use in the methods of this invention, active compounds can be givenper se or as a pharmaceutical composition containing, for example, 0.1to 99.5% (more preferably, 0.5 to 90%) of active ingredient incombination with a pharmaceutically acceptable carrier.

Methods of introduction may also be provided by rechargeable orbiodegradable devices. Various slow release polymeric devices have beendeveloped and tested in vivo in recent years for the controlled deliveryof drugs, including proteinacious biopharmaceuticals. A variety ofbiocompatible polymers (including hydrogels), including bothbiodegradable and non-degradable polymers, can be used to form animplant for the sustained release of a compound at a particular targetsite.

Actual dosage levels of the active ingredients in the pharmaceuticalcompositions may be varied so as to obtain an amount of the activeingredient that is effective to achieve the desired therapeutic responsefor a particular patient, composition, and mode of administration,without being toxic to the patient.

The selected dosage level will depend upon a variety of factorsincluding the activity of the particular compound or combination ofcompounds employed, or the ester, salt or amide thereof, the route ofadministration, the time of administration, the rate of excretion of theparticular compound(s) being employed, the duration of the treatment,other drugs, compounds and/or materials used in combination with theparticular compound(s) employed, the age, sex, weight, condition,general health and prior medical history of the patient being treated,and like factors well known in the medical arts.

A physician or veterinarian having ordinary skill in the art can readilydetermine and prescribe the therapeutically effective amount of thepharmaceutical composition required. For example, the physician orveterinarian could start doses of the pharmaceutical composition orcompound at levels lower than that required in order to achieve thedesired therapeutic effect and gradually increase the dosage until thedesired effect is achieved. By “therapeutically effective amount” ismeant the concentration of a compound that is sufficient to elicit thedesired therapeutic effect. It is generally understood that theeffective amount of the compound will vary according to the weight, sex,age, and medical history of the subject. Other factors which influencethe effective amount may include, but are not limited to, the severityof the patient's condition, the disorder being treated, the stability ofthe compound, and, if desired, another type of therapeutic agent beingadministered with the compound of the invention. A larger total dose canbe delivered by multiple administrations of the agent. Methods todetermine efficacy and dosage are known to those skilled in the art(Isselbacher et al. (1996) Harrison's Principles of Internal Medicine 13ed., 1814-1882, herein incorporated by reference).

In general, a suitable daily dose of an active compound used in thecompositions and methods of the invention will be that amount of thecompound that is the lowest dose effective to produce a therapeuticeffect. Such an effective dose will generally depend upon the factorsdescribed above.

If desired, the effective daily dose of the active compound may beadministered as one, two, three, four, five, six or more sub-dosesadministered separately at appropriate intervals throughout the day,optionally, in unit dosage forms. In certain embodiments of the presentinvention, the active compound may be administered two or three timesdaily. In preferred embodiments, the active compound will beadministered once daily.

The patient receiving this treatment is any animal in need, includingprimates, in particular humans, and other mammals such as equines,cattle, swine and sheep; and poultry and pets in general.

In certain embodiments, compounds of the invention may be used alone orconjointly administered with another type of therapeutic agent. As usedherein, the phrase “conjoint administration” refers to any form ofadministration of two or more different therapeutic compounds such thatthe second compound is administered while the previously administeredtherapeutic compound is still effective in the body (e.g., the twocompounds are simultaneously effective in the patient, which may includesynergistic effects of the two compounds). For example, the differenttherapeutic compounds can be administered either in the same formulationor in a separate formulation, either concomitantly or sequentially. Incertain embodiments, the different therapeutic compounds can beadministered within one hour, 12 hours, 24 hours, 36 hours, 48 hours, 72hours, or a week of one another. Thus, an individual who receives suchtreatment can benefit from a combined effect of different therapeuticcompounds.

This invention includes the use of pharmaceutically acceptable salts ofcompounds of the invention in the compositions and methods of thepresent invention. In certain embodiments, contemplated salts of theinvention include, but are not limited to, alkyl, dialkyl, trialkyl ortetra-alkyl ammonium salts. In certain embodiments, contemplated saltsof the invention include, but are not limited to, L-arginine,benenthamine, benzathine, betaine, calcium hydroxide, choline, deanol,diethanolamine, diethylamine, 2-(diethylamino)ethanol, ethanolamine,ethylenediamine, N-methylglucamine, hydrabamine, 1H-imidazole, lithium,L-lysine, magnesium, 4-(2-hydroxyethyl)morpholine, piperazine,potassium, 1-(2-hydroxyethyl)pyrrolidine, sodium, triethanolamine,tromethamine, and zinc salts. In certain embodiments, contemplated saltsof the invention include, but are not limited to, Na, Ca, K, Mg, Zn orother metal salts.

The pharmaceutically acceptable acid addition salts can also exist asvarious solvates, such as with water, methanol, ethanol,dimethylformamide, and the like. Mixtures of such solvates can also beprepared. The source of such solvate can be from the solvent ofcrystallization, inherent in the solvent of preparation orcrystallization, or adventitious to such solvent.

Wetting agents, emulsifiers and lubricants, such as sodium laurylsulfate and magnesium stearate, as well as coloring agents, releaseagents, coating agents, sweetening, flavoring and perfuming agents,preservatives and antioxidants can also be present in the compositions.

Examples of pharmaceutically acceptable antioxidants include: (1)water-soluble antioxidants, such as ascorbic acid, cysteinehydrochloride, sodium bisulfate, sodium metabisulfite, sodium sulfiteand the like; (2) oil-soluble antioxidants, such as ascorbyl palmitate,butylated hydroxyanisole (BHA), butylated hydroxytoluene (BHT),lecithin, propyl gallate, alpha-tocopherol, and the like; and (3)metal-chelating agents, such as citric acid, ethylenediamine tetraaceticacid (EDTA), sorbitol, tartaric acid, phosphoric acid, and the like.

In certain embodiments, the invention relates to a method for conductinga pharmaceutical business, by manufacturing a formulation of a compoundof the invention, or a kit as described herein, and marketing tohealthcare providers the benefits of using the formulation or kit fortreating or preventing any of the diseases or conditions as describedherein.

In certain embodiments, the invention relates to a method for conductinga pharmaceutical business, by providing a distribution network forselling a formulation of a compound of the invention, or kit asdescribed herein, and providing instruction material to patients orphysicians for using the formulation for treating or preventing any ofthe diseases or conditions as described herein.

In certain embodiments, the invention comprises a method for conductinga pharmaceutical business, by determining an appropriate formulation anddosage of a compound of the invention for treating or preventing any ofthe diseases or conditions as described herein, conducting therapeuticprofiling of identified formulations for efficacy and toxicity inanimals, and providing a distribution network for selling an identifiedpreparation as having an acceptable therapeutic profile. In certainembodiments, the method further includes providing a sales group formarketing the preparation to healthcare providers.

In certain embodiments, the invention relates to a method for conductinga pharmaceutical business by determining an appropriate formulation anddosage of a compound of the invention for treating or preventing any ofthe disease or conditions as described herein, and licensing, to a thirdparty, the rights for further development and sale of the formulation.

EXAMPLES Example 1: Synthetic Protocols Synthesis of Linker Cores:5,5′-(butane-1,4-diyl)-bis(1,3,4-thiadiazol-2-amine) (1001)

A mixture of adiponitrile (8.00 g, 73.98 mmol) and thiosemicarbazide(13.48 g, 147.96 mmol) in trifluoroacetic acid (TFA) (75 mL) was heatedat 80° C. for 17 hours. The reaction was cooled to room temperature andpoured into a mixture of ice and water. Sodium hydroxide pellets wereadded to the mixture until it was basic (pH 14). The white precipitatewas collected by suction filtration, rinsed with water and dried toprovide 5,5′-(butane-1,4-diyl)-bis(1,3,4-thiadiazol-2-amine) (1001,13.07 g). ¹H NMR (300 MHz, DMSO-d₆) δ 7.00 (s, 4H), 2.84 (bs, 4H), 1.68(bs, 4H).

Synthesis of5,5′-(thiobis(ethane-2,1-diyl))bis(1,3,4-thiadiazol-2-amine) (1002)

Compound 1002 was prepared as described in US/2002/0115698 A1

5,5′-(2-methylbutane-1,4-diyl)-bis(1,3,4-thiadiazol-2-amine) (1003)

A mixture of 3-methyl adipic acid (5.00 g, 31.22 mmol) andthiosemicarbazide (5.69 g, 62.43 mmol) in POCl₃ (45 mL) was heated at90° C. for 4 h. The reaction was cooled to room temperature and pouredinto a mixture of ice and water. Sodium hydroxide pellets were added tothe mixture until it was basic (pH 14). The white precipitate wascollected by suction filtration, rinsed with water and dried to provide5,5′-(2-methylbutane-1,4-diyl)-bis(1,3,4-thiadiazol-2-amine) (1003, 8.97g). ¹H NMR (300 MHz, DMSO-d₆) δ 7.00 (s, 4H), 2.89-2.81 (m, 3H),2.89-2.81 (m, 3H), 2.69 (dd, J=7.6, 7.6 Hz, 1H), 1.89-1.46 (m, 3H), 0.94(d, J=6.6 Hz, 3H).

5,5′-(propane-1,3-diyl)-bis(1,3,4-thiadiazol-2-amine) (1004)

A mixture of glutaronitrile (5.00 g, 53.13 mmol) and thiosemicarbazide(9.68 g, 106.26 mmol) in TFA (50 mL) was heated at 85° C. for 4 h. Thereaction was cooled to room temperature and poured into a mixture of iceand water. Sodium hydroxide pellets were added to the mixture until itwas basic (pH 14). The white precipitate was collected by suctionfiltration, rinsed with water and dried to provide5,5′-(propane-1,3-diyl)-bis(1,3,4-thiadiazol-2-amine) (1004, 13.72 g).¹H NMR (300 MHz, DMSO-d₆) δ 7.06-7.03 (s, 4H), 2.87 (t, J=7.5 Hz, 4H),2.02-1.95 (m, 2H).

5-(2-((2-(5-amino-1,3,4-thiadiazol-2-yl)ethyl)amino)ethyl)-1,3,4-thiadiazol-2-amine(1005)

A mixture of 3,3′-iminodipropionitrile (1.50 g, 12.18 mmol) andthiosemicarbazide (2.22 g, 24.36 mmol) in TFA (10 mL) was heated at 85for 4.5 h. The reaction was cooled to room temperature and poured into amixture of ice and water. Sodium hydroxide pellets were added to themixture until it was basic (pH 14). The white precipitate was collectedby suction filtration, rinsed with water and dried to provide5-(2-((2-(5-amino-1,3,4-thiadiazol-2-yl)ethyl)amino)ethyl)-1,3,4-thiadiazol-2-amine(1005, 1.47 g). ¹H NMR (300 MHz, DMSO-d₆) δ 6.95 (s, 4H), 2.90 (d, J=6.0Hz, 4H), 2.83 (d, J=6.3 Hz, 4H).

To a solution of methyl 3-((2-methoxy-2-oxoethyl)thio)propanoate (5.0 g,26 mmol) in THF/MeOH/water (60 mL, 4:1:1) was added lithium hydroxidemonohydrate (4.375 g, 101 mmol). The resulting mixture was stirred atroom temperature overnight before it was concentrated under reducedpressure. The residue obtained was diluted with water (˜100 mL) and theresulting solution was acidified with 6N HCl. The mixture waspartitioned between water and ethyl acetate. The organic extract waswashed with more water, separated, dried over sodium sulfate, filteredand evaporated to afford 3-((carboxymethyl)thio)propanoic acid (3.64 g,85%) as a white solid. ¹H NMR (300 MHz, DMSO-d6) δ ppm 2.55-2.57 (t, 2H)2.75-2.79 (t, 2H) 3.27 (s, 2H) 12.41 (s, 2H)

To a mixture of 3-((carboxymethyl)thio)propanoic acid (3.64 g, 22.2mmol) and thiosemicarbazide (4.1 g, 45 mmol) was added phosphorusoxychloride (25 mL) slowly. The resulting mixture was stirred at 90° C.for 3 hr before it was poured over crushed ice slowly. The solidseparated was filtered and the filtrate was basified to pH-13 by solidsodium hydroxide. The solid separated was filtered, washed with waterand dried at 45° C. under vacuum overnight to afford 1006 (˜3 g, 50%) asa tan solid. ¹H NMR (300 MHz, DMSO-d6) δ ppm 2.79-2.83 (t, 2H) 3.06-3.10(t, 2H) 3.99 (s, 2H) 7.04 (s, 2H) 7.16 (s, 2H)

A mixture of 2,2′-Thiodiacetic acid (5.00 g, 33.3 mmol) andthiosemicarbazide (6.07 g, 66.6 mmol) in POCl₃ (40 mL) was heated at 90°C. for 5 h. The reaction was cooled to room temperature and carefullypoured it onto a mixture of ice and water. Sodium hydroxide pellets wereadded to the mixture until it was basic (pH 14). The white precipitatewas collected by suction filtration, rinsed with water and dried toafford 1007. ¹H NMR (300 MHz, DMSO-d₆) δ 7.18 (s, 4H), 3.96 (s, 4H).

A mixture of 1,5-dicyanopentane (1.00 g, 8.19 mmol) andthiosemicarbazide (1.5 g, 16.40 mmol) in TFA (3 mL) was heated at 85° C.for 5 h. The reaction was cooled to room temperature and poured into amixture of ice and water. Sodium hydroxide pellets were added to themixture until it was basic (pH 14). The white precipitate was collectedby suction filtration, rinsed with water and dried to afford 1008. ¹HNMR (300 MHz, DMSO-d₆) δ 6.98 (s, 4H), 2.81 (t, 4H), 1.67 (m, 4H), 1.20(m, 2H).

Acylation of Diamino Core: Method A: Via Acid ChlorideN,N′-[5,5′-(butane-1,4-diyl)-bis(1,3,4-thiadiazole-5,2-diyl)]-bis(2-phenylacetamide)(21)

To a suspension of 1001 (8.00 g, 31.21 mmol) in 1-Methyl-2-pyrrolidinone(NMP) 100 mL) at 0° C. was added phenylacetyl chloride (10.25 mL, 77.54mmol) dropwise. The resulting mixture was stirred at 0° C. for 1 hbefore it was quenched by addition of water (˜200 mL). The whiteprecipitate was collected by suction filtration, rinsed with water anddried to provideN,N′-[5,5′-(butane-1,4-diyl)-bis(1,3,4-thiadiazole-5,2-diyl)]-bis(2-phenylacetamide)(21, 14.02 g). ¹H NMR (300 MHz, DMSO-d₆) δ 12.66 (s, 2H), 7.34 (m, 10H),3.81 (s, 4H), 3.01 (bs, 4H), 1.76 (bs, 4H).

Compound 43 was prepared following Method A using phenoxyacetylchloride. ¹H NMR (300 MHz, DMSO-d₆) δ 12.68 (s, 2H), 7.35-7.30 (m, 4H),6.99-6.97 (m, 6H), 4.90 (s, 4H), 3.05 (bs, 4H), 1.79 (bs, 4H).

Compound 100 was prepared following Method A. ¹H NMR (300 MHz, DMSO-d₆)δ 12.42 (s, 2H), 3.64 (t, J=5.6 Hz, 4H), 3.24 (s, 6H), 3.01 (bs, 4H),2.72 (t, J=6.2 Hz, 4H), 1.79 (bs, 4H).

Compound 5 was prepared according to Method A: ¹H NMR (300 MHz, DMSO-d₆)δ 12.66 (s, 4H), 3.27 (t, J=6.99 Hz, 4H), 2.95 (t, J=7.02 Hz, 4H), 2.12(s, 6H).

To a suspension of 1001 (200 mg, 0.78 mmol) in NMP (2 mL) at 0° C. wasadded 0-acetylmandelic acid chloride (0.44 mL, 1.95 mmol) dropwise. Theresulting mixture was stirred at 0° C. for 1.5 h before it was quenchedby addition of water (˜10 mL). The white precipitate was collected bysuction filtration, rinsed with more water and dried. The crude materialwas purified by recrystallization with a mixture of DMSO and MeOH toafford 173.

A flask was charged with 173 and 2N ammonia in MeOH (3 ml) and theresulting mixture was stirred at room temperature for 6 h. The solventwas removed and the resulting material was dried in the oven to afford174. ¹H NMR (300 MHz, DMSO-d₆) δ 12.42 (s, 2H), 7.53-7.31 (m, 10H), 6.35(s, 2H), 5.34 (d, J=1.14 Hz, 2H), 3.01 (bs, 4H), 1.76 (bs, 4H).

Compound 306 was prepared according to the procedure for compound 174above.

To a suspension of 1001 (400 mg, 1.56 mmol) in NMP (4 mL) at 0° C. wasadded (R)-(−)-O-formylmandeloyl chloride (0.61 mL, 3.90 mmol) dropwise.The resulting mixture was stirred at 0° C. for 1.5 h before it wasquenched by addition of water (˜10 mL). The white precipitate wascollected by suction filtration, rinsed with more water and dried. Thecrude material was purified by recrystallization with a mixture of DMSOand MeOH to afford 68.

A flask was charged with 68 and 2N ammonia in MeOH (5 ml) and theresulting mixture was stirred at room temperature for 2 h. The solventwas removed and the resulting material was dried in the oven to afford80. ¹H NMR (300 MHz, DMSO-d₆) δ 7.53-7.31 (m, 10H), 6.34 (s, 2H), 5.33(s, 2H), 3.01 (bs, 4H), 1.75 (bs, 4H).

To a suspension of 1002 (544 mg, 1.89 mmol) in NMP (13 mL) at −15° C.was added phenylacetyl chloride (0.249 mL, 1.89 mmol) dropwise. Theresulting mixture was stirred at 0° C. for 1 h and quenched by theaddition of water (54 mL). The white precipitate was collected bysuction filtration, rinsed with water (27 mL) and ethyl acetate (3×27mL). The filtrate was basified to pH 11 using 2.5M NaOH. The layers wereseparated and the aqueous layer extracted with dichloromethane (3×54mL). The combined organic layers were dried over magnesium sulfate andconcentrated to affordN-(5-(2-((2-(5-amino-1,3,4-thiadiazol-2-yl)ethyl)thio)ethyl)-1,3,4-thiadiazol-2-yl)-2-phenylacetamide(17, 56 mg) ¹H NMR (300 MHz, DMSO-d₆) δ 12.71 (s, 1H), 7.32 (s, 5H),3.81 (s, 2H), 3.25 (t, J=7.61 Hz, 2H) 3.06 (t, J=7.25 Hz, 2H), 2.92 (t,J=6.90 Hz, 2H), 2.85 (t, J=6.86 Hz, 2H)

Phenylacetyl chloride (0.134 mL, 1.01 mmol) and acetoxyacetyl chloride(0.109 mL, 1.01 mmol) were mixed together in NMP (0.5 mL). This mixturewas slowly added to a suspension of 1002 (292 mg, 1.01 mmol) in NMP (7mL) at RT. The resulting mixture was stirred at RT for 1 h and quenchedby the addition of water (20 mL). The white precipitate was collected bysuction filtration, rinsed with water and dried under high vacuum. Thecrude material was purified by preparative HPLC. Compound 26: ¹H NMR(300 MHz, DMSO-d₆) δ 12.69 (s, 2H), 7.34 (3, 5H), 4.81 (s, 2H), 3.82 (s,2H), 2.96 (bs, 4H), 2.14 (s, 3H).

Compound 44 was prepared following the procedure for compound 21described previously. ¹H NMR (300 MHz, DMSO-d₆) δ 12.66 (s, 2H),7.34-7.28 (m, 10H), 3.81 (s, 4H), 3.05-3.00 (m, 3H), 2.87 (dd, J=7.9,8.2 Hz, 1H), 1.95-1.77 (m, 3H), 0.94 (d, J=6.5 Hz, 3H).

Compound 72 was prepared following the procedure for compound 21described previously. To a suspension of diamine 1004 (0.70 g, 3.07mmol) in NMP (15 mL) at 0° C. was added phenylacetyl chloride (811 μL,6.13 mmol) dropwise. The resulting mixture was stirred at 0° C. for 1 hbefore it was quenched by addition of water. The white precipitate wascollected by suction filtration, rinsed with water and dried to provideN,N′-[5,5′-(propane-1,3-diyl)-bis(1,3,4-thiadiazole-5,2-diyl)]-bis(2-phenylacetamide)(72, 1.37 g). ¹H NMR (300 MHz, DMSO-d₆) δ 12.68 (s, 2H), 7.38-7.27 (m,10H), 3.82 (s, 4H), 3.06 (t, J=7.2 Hz, 4H), 2.17-2.12 (m, 2H).

To a suspension of compound 1005 (100 mg, 0.37 mmol) in DMF (12 mL) atroom temperature was added a solution of (t-Boc)₂O (88 mg, 0.41 mmol) inDMF (2 mL). The mixture was stirred at room temperature for 24 h. Tothis reaction mixture was added NMP (2 mL) and followed by addition ofphenylacetyl chloride (97 μL, 0.74 mmol). The reaction was stirred for 1h before it was poured into a mixture of ice-water. The solid wascollected by suction filtration, rinsed with water and dried to provide1010 (180 mg).

The above product 1010 (160 mg, 0.26 mmol) in a mixture of TFA (1.5 mL)and CH₂CH₂ (10 mL) was stirred at room temperature for 4 h before it wasconcentrated. The residue was re-taken up in CH₂Cl₂ (3×) andconcentrated to provideN,N′-(5,5′-(azanediyl-bis(ethane-2,1-diyl))-bis(1,3,4-thiadiazole-5,2-diyl))-bis(2-phenylacetamide)trifluoroacetic acid (149, 122 mg). ¹H NMR (300 MHz, DMSO-d₆) δ 12.81(s, 2H), 8.75 (bs, 2H), 7.38-7.27 (m, 10H), 3.84 (s, 4H), 3.45 (d, J=2.9Hz, 4H), 3.39 (d, J=6.0 Hz, 4H).

To a suspension of 1006 (0.274 g, 1 mmol) in NMP (5 mL) was added phenylacetyl chloride (0.263 mL, 2 mmol) dropwise. The mixture was stirred atroom temperature for 1 hr and afterwards it was diluted with water.Solid separated was filtered, washed with more water and dried. Thecrude material was purified by prep HPLC to afford 199 as a white solid.¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 2.87-2.91 (t, 2H) 3.25-3.29(t, 2H) 3.82 (s, 4H) 4.19 (s, 2H) 7.26-7.33 (m, 10H) 12.71-12.72 (br s,2H).

Method B: Via Acid Using Peptide Coupling Reagents

To a flask containing5,5′-(thiobis(ethane-2,1-diyl))bis(1,3,4-thiadiazol-2-amine) (1002)(0.69 mmol, 0.20 g, 1.0 equiv.) was added 2-morpholinoacetic acid (1.52mmol, 0.22 g, 2.2 equiv.),O-(Benzotriazol-1-yl)-N,N,N′,N′-tetramethyluronium hexafluorophosphate(HBTU) (2.20 mmol, 0.83 g, 3.2 equiv.), 1-Hydroxybenzotriazole (HOBT)(2.2 mmol, 0.29 g, 3.2 equiv.) 5 mL of DMF followed byN,N-Diisopropylethylamine (DIEA) (5.52 mmol, 0.71 g, 0.960 mL, 8.0equiv.).

The mixture was stirred overnight at room temperature and then dilutedwith 15 mL water. The mixture was extracted with EtOAc and the organiclayers combined, washed with water, brine and dried over Na₂SO₄. TheNa₂SO₄ was removed by filtration and the volatiles removed under reducedpressure to give 0.04 g of compound 12. ¹HNMR (300 MHz, CDCl₃) Compound12: δ 3.80 (broad multiplet, 4H), 3.34 (dd, 4H, J=7.2 Hz), 3.28 (s, 4H),3.00 (dd, 4H, J=7.1 Hz), 2.63 (broad multiplet, 4H).

To a flask containing5,5′-(butane-1,4-diyl)bis(1,3,4-thiadiazol-2-amine) (1101) (3.9 mmol,1.0 g, 1.0 equiv.) was added(S)-2-((tert-butoxycarbonyl)amino)-2-phenylacetic acid (8.58 mmol, 2.15g, 2.2 equiv.), HBTU (12.48 mmol, 4.73 g, 3.2 equiv.), HOBt (12.48 mmol,1.69 g, 3.2 equiv.) 25 mL of DMF followed by DIEA (31.2 mmol, 4.03 g,5.43 mL, 8.0 equiv.). The mixture was stirred overnight and poured into150 mL water. The white solids that formed were collected by vacuumfiltration, washed with water and dried under vacuum giving 2.47 g ofthe bis-Boc protected intermediate.

To a slurry of the bis-Boc protected intermediate (2.76 mmol, 2.0 g, 1.0equiv.) in 20 mL of dichloromethane (DCM) was added 4 M HCl in dioxane(40 mmol, 10 mL) with vigorous stirring. The mixture briefly becameclear and homogeneous then a white precipitate formed. The mixture wasstirred overnight and diluted with 20 mL diethyl ether. The solids werecollected by vacuum filtration washed with additional diethyl ether anddried under vacuum giving 0.9 g 187. ¹H NMR (300 MHz, DMSO, d₆) Compound187: δ 9.13 (s, 4H), 7.61 (m, 4H), 7.48 (m, 6H), 6.2 (broad singlet,4H), 5.32 (s, 2H), 3.04 (broad multiplet, 4H), 1.77 (broad multiplet,4H).

To a solution of 2,2-bis(hydroxymethyl)propionic acid (5.00 g, 37.28mmol) in acetone (80 mL) at room temperature was added2,2-dimethoxypropane (6.88 mL, 55.92 mmol) and p-TsOH.H₂O (0.36 g, 1.86mmol). The reaction was stirred for 2 h before it was quenched with Et₃N(0.30 mL). The organic volatile was removed under reduced pressure. Theresidue was partitioned between EtOAc and water. The organic layer waswashed with brine, dried (MgSO₄) and concentrated to provide the desiredproduct 1011 (5.17 g) as a white solid.

To a suspension of diamine 1001 (500 mg, 1.95 mmol),3-fluorophenylacetic acid (361 mg, 2.34 mmol) and acid 1011 (442 mg,2.54 mmol) in DMF (20 mL) at 0° C. was added HOBt (791 mg, 5.85 mmol)and followed by N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimidehydrochloride (EDC) (1.12 g, 5.85 mmol). The mixture was stirred from 0°C. to room temperature over 18 h before it was diluted with water. Theprecipitate was collected by suction filtration, washed with water anddried. The crude product was purified by silica gel chromatographyeluting with 1-10% MeOH in CH₂Cl₂ to provideN-(5-(4-(5-(2-(3-fluorophenyl)acetamido)-1,3,4-thiadiazol-2-yl)butyl)-1,3,4-thiadiazol-2-yl)-2,2,5-trimethyl-1,3-dioxane-5-carboxamide(1012, 208 mg).

The above product 1012 (87 mg, 0.16 mmol) and TFA (2 mL) in a mixture ofTHF (8 mL) and water (2 mL) was heated at 50° C. for 5 h before it wasconcentrated under reduced pressure. The crude residue was purified byHPLC to provideN,N′-(5-(4-(5-(2-(3-fluorophenyl)acetamido)-1,3,4-thiadiazol-2-yl)butyl)-1,3,4-thiadiazol-2-yl)-3-hydroxy-2-(hydroxymethyl)-2-methylpropanamide(152). ¹H NMR (300 MHz, DMSO-d₆) δ 12.68 (s, 1H), 11.77 (s, 1H),7.04-7.38 (m, 1H), 7.18-7.09 (m, 4H), 4.98 (s, 2H), 3.86 (s, 2H), 3.62(dd, J=10.7, 29.0 Hz, 4H), 3.03 (bs, 4H), 1.77 (bs, 4H), 1.14 (s, 3H).

To a suspension of diamine 1001 (400 mg, 1.56 mmol),3-fluorophenylacetic acid (313 mg, 2.03 mmol),(R)-(−)-2,2-dimethyl-5-oxo-1,3-dioxolane-4-acetic acid (353 mg, 2.03mmol) and Et₃N (200 μL) in DMF (20 mL) at 0° C. was added HOBt (633 mg,4.68 mmol) and followed by EDC (897 mg, 4.68 mmol). The mixture wasstirred from 0° C. to room temperature over 18 h before it was dilutedwith water. The precipitate was collected by suction filtration andwashed with water. The solid was further rinsed with a mixture of hotMeOH-THF. The combined filtrate was concentrated and purified by silicagel chromatography eluting with 1-10% MeOH in CH₂Cl₂ to provide(R)-N-(5-(4-(5-(2-(3-fluorophenyl)acetamido)-1,3,4-thiadiazol-2-yl)butyl)-1,3,4-thiadiazol-2-yl)-3,4-dihydroxybutanamide(1013, 93 mg).

The above product 1013 (87 mg, 0.16 mmol) and TFA (2 mL) in a mixture ofTHF (8 mL) and water (2 mL) was heated at 50° C. for 5 h before it wasconcentrated under reduced pressure. The crude residue was purified byHPLC to provide(R)-N-(5-(4-(5-(2-(3-fluorophenyl)acetamido)-1,3,4-thiadiazol-2-yl)butyl)-1,3,4-thiadiazol-2-yl)-3,4-dihydroxybutanamide(153). ¹H NMR (300 MHz, DMSO-d₆) δ 12.67 (s, 1H), 12.43 (s, 1H),7.41-7.38 (m, 1H), 7.20-7.12 (m, 4H), 4.45-4.40 (m, 1H), 3.86 (s, 2H),3.03 (bs, 4H), 2.85-2.77 (m, 2H), 1.78 (bs, 4H).

To a suspension of (S)-(+)-O-acetylmandelic acid (666 mg, 3.43 mmol) andO-(7-Azabenzotriazol-1-yl)-N,N,N′,N′-tetramethyluroniumhexafluorophosphate (HATU) (1.47 g, 3.86 mmol) in DMF (4 mL) was addedDIEA (0.672 ml, 3.86 mmol) followed by 1001 (400 mg, 1.56 mmol). Theresulting mixture was stirred at room temperature overnight before itwas quenched by addition of water (˜10 mL). The white precipitate wascollected by suction filtration, rinsed with more water and dried. Thecrude material was purified by recrystallization with a mixture of DMSOand MeOH to afford 66.

A flask was charged with 66 and 2N ammonia in MeOH (5 ml) and theresulting mixture was stirred at room temperature for 6 h. The solventwas removed and the resulting material was dried in the oven to afford92. ¹H NMR (300 MHz, DMSO-d₆) δ 12.42 (s, 2H), 7.53-7.31 (m, 10H), 6.35(s, 2H), 5.33 (s, 2H), 3.01 (bs, 4H), 1.76 (bs, 4H).

A flask was charged with 1001 (200 mg, 0.78 mmol), DL-3-phenyllacticacid (285 mg, 1.716 mmol), and HOBT (527 mg, 3.9 mmol) in DMF (3 ml) wasadded EDC (897 mg, 4.68 mmol) followed by triethylamine (0.87 ml, 6.24mmol). The resulting mixture was stirred at room temperature overnightbefore it was quenched by addition of water (˜5 mL). The mixture waspartitioned between water and EtOAc. The organic extract was washed withwater, dried over sodium sulfate, filtered and evaporated. The crudematerial was purified by silica gel chromatography eluting with 0-6%MeOH in CH₂Cl₂ to afford 69. ¹H NMR (300 MHz, DMSO-d₆) δ 12.20 (s, 2H),7.24 (m, 10H), 5.75 (d, J=6.87 Hz, 2H), 4.43 (m, 2H), 3.10 (m, 6H),2.89-2.81 (m, 2H), 1.80 (bs, 4H).

A flask was charged with 1001 (200 mg, 0.78 mmol), D-(+)-3-phenyllacticacid (285 mg, 1.716 mmol), and HOBt (464 mg, 3.43 mmol) in DMF (3 ml)was added EDC (822 mg, 4.28 mmol) followed by triethylamine (0.718 ml,5.15 mmol). The resulting mixture was stirred at room temperatureovernight before it was quenched by addition of water (˜5 mL). Themixture was partitioned between water and EtOAc. The organic extract waswashed with water, dried over sodium sulfate, filtered and evaporated.The crude material was purified by silica gel chromatography elutingwith 0-6% MeOH in CH₂Cl₂ to afford 169. ¹H NMR (300 MHz, DMSO-d₆) δ12.20 (s, 2H), 7.24 (m, 10H), 5.75 (d, J=6.87 Hz, 2H), 4.43 (m, 2H),3.03 (m, 6H), 2.89-2.81 (m, 2H), 1.80 (bs, 4H).

A flask was charged with 1001 (200 mg, 0.78 mmol), L-(−)-3-phenyllacticacid (285 mg, 1.716 mmol), and HOBt (464 mg, 3.43 mmol) in DMF (3 ml)was added EDC (822 mg, 4.28 mmol) followed by triethylamine (0.718 ml,5.15 mmol). The resulting mixture was stirred at room temperatureovernight before it was quenched by addition of water (˜5 mL). Themixture was partitioned between water and EtOAc. The organic extract waswashed with more water, dried over sodium sulfate, filtered andevaporated. The crude material was purified by silica gel chromatographyeluting with 0-6% MeOH in CH₂Cl₂ to afford 146. ¹H NMR (300 MHz,DMSO-d₆) δ 12.27 (s, 2H), 7.31 (m, 10H), 5.78 (m, 2H), 4.44 (m, 2H),3.05 (m, 6H), 2.87 (m, 2H), 1.79 (bs, 4H).

To a suspension of (R)-(+)-3-hydroxy-3-phenylpropionic acid (285 mg,1.72 mmol) and HATU (719 mg, 1.89 mmol) in DMF (3 mL) was added DIEA(0.329 ml, 1.89 mmol) followed by 1001 (200 mg, 0.78 mmol). Theresulting mixture was stirred at room temperature overnight before itwas quenched by addition of water (˜10 mL). The white precipitate wascollected by suction filtration, rinsed with more water and dried. Thecrude material was purified by recrystallization with DMSO and MeOH toafford 127. ¹H NMR (300 MHz, DMSO-d₆) δ 12.38 (s, 2H), 7.34 (m, 10H),5.56 (m, 2H), 5.10 (m, 2H), 3.04 (bs, 4H), 2.80 (m, 4H), 1.80 (bs, 4H).

To a suspension of (R)-2-hydroxy-2-phenylbutyric acid (310 mg, 1.72mmol) and HATU (719 mg, 1.89 mmol) in DMF (3 mL) was added DIEA (0.329ml, 1.89 mmol) followed by 1001 (200 mg, 0.78 mmol). The resultingmixture was stirred at room temperature overnight before it was quenchedby addition of water (˜10 mL). The crude material was purified by HPLCto afford 143. ¹H NMR (300 MHz, DMSO-d₆) δ 7.61 (d, J=7.65 Hz, 4H), 7.34(m, 6H), 2.99 (bs, 4H), 2.26 (m, 2H), 2.10 (m, 2H) 1.74 (bs, 4H), 0.80(t, 6H).

To a suspension of 3-Oxo-1-indancarboxylic acid (604 mg, 3.43 mmol) andHATU (1.47 g, 3.86 mmol) in DMF (5 mL) was added DIEA (0.672 ml, 3.86mmol) followed by 1001 (400 mg, 1.56 mmol). The resulting mixture wasstirred at room temperature overnight before it was quenched by additionof water (˜10 mL). The light brown precipitate was collected by suctionfiltration, rinsed with water and dried. The crude material was purifiedby recrystallization with a mixture of DMSO and MeOH to afford 64.

To a suspension of 64 (100 mg, 0.175 mmol) in EtOH (20 ml) at 0° C. wasadded NaBH₄ (15 mg, 0.384 mmol) and the resulting mixture was stirredfor 1 h before it was quenched by 1N HCl. The mixture was partitionedbetween 1N HCl and EtOAc, the organic extract was dried over sodiumsulfate, filtered and evaporated. The crude material was purified bysilica gel chromatography eluting with 0-6% MeOH in CH₂Cl₂ and furtherpurified by recrystallization with a mixture of DMSO and MeOH to afford94. ¹H NMR (300 MHz, DMSO-d₆) δ 12.81 (s, 2H), 7.34 (m, 8H), 5.56 (m,2H), 5.11 (t, 2H), 4.15 (t, 2H), 3.05 (bs, 4H), 2.70 (m, 2H), 2.15 (m,2H), 1.80 (bs, 4H).

To a solution of DL-mandelic acid (1 g, 6.57 mmol) in DMF (10 ml) at 0°C. was added NaH (700 mg, 19.7 mmol) and allowed the mixture to stir for20 minutes before 2-bromoethyl methyl ether (1.24 ml, 13.1 mmol) wasadded dropwise. The resulting mixture was stirred at 0° C. and slowlywarmed up to room temperature overnight before it was quenched by 1NHCl. The mixture was partitioned between 1N HCl and EtOAc, the organicextract was washed with water, dried over sodium sulfate, filtered andevaporated to afford 1014.

To a suspension of 1014 (500 mg, 2.37 mmol) and HATU (995 mg, 2.62 mmol)in DMF (3 mL) was added DIEA (0.456 ml, 2.62 mmol) followed by 1001 (277mg, 1.08 mmol). The resulting mixture was stirred at room temperatureovernight before it was quenched by addition of water (˜6 mL). Themixture was partitioned between water and EtOAc. The organic extract waswashed with water, dried over sodium sulfate, filtered and evaporated.The crude material was purified by HPLC to afford 203. ¹H NMR (300 MHz,DMSO-d₆) δ 12.58 (s, 2H), 7.49-7.37 (m, 10H), 5.22 (s, 2H), 3.66-3.54(m, 8H), 3.27 (s, 6H), 3.01 (bs, 4H), 1.75 (bs, 4H).

To a suspension of 2-(4-Boc-piperazinyl)-2-phenylacetic acid (1.1 g,3.43 mmol) and HATU (1.47 g, 3.86 mmol) in DMF (5 mL) was added DIEA(0.672 ml, 3.86 mmol) followed by 1001 (400 mg, 1.56 mmol). Theresulting mixture was stirred at room temperature overnight before itwas quenched by addition of water (˜10 mL). The white precipitate wascollected by suction filtration, rinsed with water and dried. The crudematerial was purified by recrystallization with DMSO and MeOH to afford63.

A flask was charged with 63 and 4N HCl in 1,4-dioxane (6 ml) and theresulting mixture was stirred at room temperature for 3 h. Theprecipitation was collected by filtration, rinse with EtOAc/CH₂Cl₂ anddried to afford 77. ¹H NMR (300 MHz, DMSO-d₆) δ 9.10 (bs, 4H), 7.51-7.41(m, 10H), 4.90 (bs, 2H), 4.62 (s, 2H), 3.15 (bs, 8H), 3.03 (bs, 4H),2.73 (bs, 8H), 1.76 (bs, 4H).

To a suspension of (R)-(+)-3-hydroxy-3-phenylpropionic acid (254 mg,1.53 mmol) and HATU (640 mg, 1.68 mmol) in DMF (3 mL) was added DIEA(0.292 ml, 1.68 mmol) followed by 1002 (200 mg, 0.693 mmol). Theresulting mixture was stirred at room temperature overnight before itwas quenched by addition of water (˜10 mL). The white precipitate wascollected by suction filtration, rinsed with water and dried. The crudematerial was purified by recrystallization with a mixture of DMSO andMeOH to afford 126. ¹H NMR (300 MHz, DMSO-d₆) δ 12.40 (s, 2H), 7.38 (m,10H), 5.55 (m, 2H), 5.09 (m, 2H), 3.27 (t, 4H), 2.95 (t, 4H), 2.82 (m,4H).

A flask was charged with 1002 (200 mg, 0.693 mmol),2-(4-Boc-piperazinyl)-2-phenylacetic acid (244 mg, 0.763 mmol), and HOBt(187 mg, 1.39 mmol) in DMF (3 ml) was added EDC (332 mg, 1.73 mmol)followed by triethylamine (0.290 ml, 2.08 mmol). The resulting mixturewas stirred at room temperature overnight before phenylacetyl chloride(0.037 ml, 0.277 mmol) was added dropwise at 0° C. and stirred for 1 hbefore it was quenched by addition of water (˜10 mL). The whiteprecipitate was collected by suction filtration, rinsed with water anddried. The crude material was purified by HPLC to afford 70 and 76.

A flask was charged with 70 and 4N HCl in 1,4-dioxane (6 ml) and theresulting mixture was stirred at room temperature for 3 h. Theprecipitation was collected by filtration, rinse with EtOAc/CH₂Cl₂ anddried to afford 78. ¹H NMR (300 MHz, DMSO-d₆) δ 12.70 (s, 2H), 8.97 (bs,2H), 7.50-7.29 (m, 10H), 4.72 (bs, 1H), 4.59 (s, 1H), 3.82 (s, 2H), 3.27(t, 4H), 3.15 (bs, 4H), 2.92 (t, 4H), 2.70 (bs, 4H).

A flask was charged with 76 and 4N HCl in 1,4-dioxane (6 ml) and theresulting mixture was stirred at room temperature for 3 h. Theprecipitation was collected by filtration, rinse with EtOAc/CH₂Cl₂ anddried to afford 79. ¹H NMR (300 MHz, DMSO-d₆) δ 12.87 (s, 2H), 9.03 (bs,4H), 7.50-7.40 (m, 10H), 4.67 (bs, 2H), 4.59 (s, 2H), 3.28 (t, 4H), 3.14(bs, 8H), 2.97 (t, 4H), 2.71 (bs, 8H).

Amide Coupling General Procedure (used for following examples): To a 0.2molar concentration suspension of carboxylic acid (2 equivalents) in DMFwas added HATU (2 equivalents) and stirred till reaction mixture isclear followed by the addition of an amine (1 equivalent) and DIPEA (4equivalents). The resulting mixture was stirred at room temperatureovernight before it was quenched by the addition of water. The solidseparated was filtered, washed with water and dried.

39: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.89-2.01 (m, 6H)2.18-2.29 (m, 2H) 2.95-3 (m, 4H) 3.79-3.86 (m, 2H) 3.94-4.02 (m, 2H)4.55-4.6 (m, 2H) 12.29 (brs, 2H).

41: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 2.93-2.98 (m, 4H)3.27-3.32 (m, 4H), 4.46 (s, 4H), 5.18-5.2 (br s, 2H) 6.88-7.03 (m, 8H)12.87-12.92 (br s, 2H).

51: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.78 (br s, 4H)3.05-3.06 (br s, 4H), 3.38-3.40 (m, 2H) 3.54-3.63 (m, 2H) 5.44-5.50 (m,2H) 6.92-7.26 (m, 8H) 12.78 (br s, 2H).

54: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.92-2.03 (m, 10H)2.17-2.28 (m, 2H) 3.05 (br s, 4H) 3.79-3.85 (m, 2H) 3.94-4.01 (m, 2H)4.55-4.59 (m, 2H) 12.27 (br s, 2H).

60: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.77 (br s, 4H) 3.04(br s, 4H) 5.20 (s, 4H) 6.31 (br s, 2H) 7.49 (br s, 2H) 7.79 (br s, 2H)12.80 (br s, 2H).

85: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 0.20-0.21 (br s, 4H)0.48-0.50 (br s, 4H) 1.79 (br s, 4H) 2.35-2.38 (br s, 4H) 3.04 (br s,4H) 12.32 (br s, 2H).

87: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.78 (br s, 4H) 3.03(br s, 4H) 4.05 (s, 4H) 6.99 (br s, 4H) 7.42-7.44 (m, 2H) 12.68 (br s,2H).

114: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.01-1.12 (m, 4H) 1.40(s, 18H) 1.61-1.65 (m, 4H) 1.78 (br s, 4H) 1.95 (br s, 2H) 3.84 (m, 4H)2.65-2.75 (m, 4H) 3.03 (br s, 4H) 3.89-3.93 (m, 4H) 12.39 (br s, 2H).

123: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.43 (s, 6H) 1.79-1.94(m, 10H) 2.22-2.31 (m, 2H) 3.05 (br s, 4H) 3.85-4.01 (m, 4H) 11.85 (brs, 2H).

133: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 2.92-2.97 (m, 4H)3.26-3.30 (m, 4H) 4.61-4.87 (m, 6H) 6.83-6.89 (m, 4H) 7.16-7.21 (m, 2H)7.36-7.38 (m, 2H) 12.95 (br s, 2H).

135: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.77 (br s, 4H) 3.03(br s, 4H) 4.60-4.87 (m, 6H) 6.83-6.89 (m, 4H) 7.16-7.22 (m, 2H)7.36-7.38 (m, 2H) 12.92 (br s, 2H).

114: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.01-1.12 (m, 4H) 1.40(s, 18H) 1.61-1.65 (m, 4H) 1.78 (br s, 4H) 1.95 (br s, 2H) 3.84 (m, 4H)2.65-2.75 (m, 4H) 3.03 (br s, 4H) 3.89-3.93 (m, 4H) 12.39 (br s, 2H).

323: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.76 (brs, 4H) 3.01(brs, 4H) 4.02 (s, 4H) 6.56 (s, 2H) 6.94-7.05 (m, 4H) 7.31-7.33 (m, 4H)11.12 (brs, 2H) 12.69 (s, 2H).

397: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.75 (brs, 4H) 2.90(brs, 2H) 3.02 (brs, 2H) 3.67-3.82 (m, 10H) 6.85-7.03 (m, 4H) 7.26-7.36(m, 5H) 7.55-7.58 (d, 1H) 8.18-8.21 (d, 1H) 11.26 (s, 1H) 12.65 (brs,1H).

398: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.75 (brs, 4H) 2.90(brs, 2H) 3.02 (brs, 2H) 3.72-3.78 (m, 10H) 6.42-6.51 (m, 4H) 7.36 (m,5H) 7.54-7.58 (d, 1H) 8.18-8.21 (d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

399: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.48 (s, 9H) 1.75(brs, 4H) 2.90 (brs, 2H) 3.02 (brs, 2H) 3.74-3.78 (m, 4H) 6.92-6.94 (m,1H) 7.20-7.36 (m, 7H) 7.51-7.58 (m, 2H) 8.18-8.21 (d, 1H) 9.34 (s, 1H)11.26 (s, 1H) 12.65 (brs, 1H).

400: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.48 (s, 9H) 1.75(brs, 4H) 2.90 (brs, 2H) 3.02 (brs, 2H) 3.71-3.78 (m, 4H) 7.18-7.42 (m,9H) 7.54-7.58 (m, 2H) 8.18-8.21 (d, 1H) 9.34 (s, 1H) 11.26 (s, 1H) 12.65(brs, 1H).

324: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.39 (s, 18H) 1.76(brs, 4H) 3.01 (brs, 4H) 3.79 (s, 4H) 4.11-4.13 (brs, 4H) 7.13-7.38 (m,8H) 12.65 (s, 2H).

Method C: Via Aluminum Amide Coupling with Esters/Lactones

To a suspension of 1002 (288 mg, 1.00 mmol) in toluene (9 mL) was added3-isochromanone (311 mg, 2.10 mmol) followed by trimethyl aluminum (2Min toluene, 1.0 mL, 2.00 mmol). The resulting mixture was stirred at 75°C. for 15 h, cooled to room temperature and diluted with ethyl acetate(50 mL). The organic layer was washed with water (3×20 mL), 10% sodiumchloride solution (10 mL), dried (magnesium sulfate) and concentratedunder reduced pressure. The crude product was purified by HPLC to affordN,N′-(5,5′-(thiobis(ethane-2,1-diyl))bis(1,3,4-thiadiazole-5,2-diyl))bis(2-(2-(hydroxymethyl)phenyl)acetamide)(181, 78 mg). ¹H NMR (300 MHz, DMSO-d₆) δ 7.42 (d, J=6.84 Hz, 2H), 7.26(bs, 6H), 4.57 (s, 4H), 3.90 (s, 4H), 3.27 (t, J=6.62 Hz, 4H), 2.94 (t,J=6.44 Hz, 4H)

To a suspension of 1001 (256 mg, 1.00 mmol) in toluene (8 mL) was added3-isochromanone (311 mg, 2.10 mmol) followed by trimethyl aluminum (2Min toluene, 1.0 mL, 2.00 mmol). The resulting mixture was stirred at 75°C. 15 h, cooled to room temperature and diluted with ethyl acetate (50mL). The organic layer was washed with water (3×20 mL), 10% sodiumchloride solution (10 mL), dried (magnsesium sulfate) and concentratedunder reduced pressure. The crude product was purified by HPLC to affordN,N′-(5,5′-(thiobis(ethane-2,1-diyl))bis(1,3,4-thiadiazole-5,2-diyl))bis(2-(2-(hydroxymethyl)phenyl)acetamide)(208, 62 mg). ¹H NMR (300 MHz, DMSO-d₆) δ 7.41 (s, 2H), 7.26 (s, 6H),4.56 (s, 4H), 3.01 (bs, 4H), 1.76 (bs, 4H)

To a solution of 1015 (3.2 g, 19.5 mmol) in carbon tetrachloride (150mL) was added N-bromosuccinimide (3.47 g, 19.6 mmol) and benzoylperoxide (10 mg, catalytic). The resulting mixture was refluxedovernight before it was filtered hot. The filtrate was concentratedunder reduced pressure and the residue obtained was purified by silicagel chromatography eluting with 20% ethylacetate/hexane to afford 1016(2 g, 42% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δ ppm 3.66(s, 2H) 3.74 (s, 3H) 4.51 (s, 2H) 7.35 (m, 4H).

To a solution of 1016 (0.243 g, 1 mmol) in acetone (10 mL) was added2-methyl imidazole (0.41 g, 5 mmol). The resulting mixture was refluxedovernight before it was concentrated under reduced pressure and theresidue obtained was diluted with water (˜100 mL). The resultingsolution was partitioned between water and ethyl acetate. The organicextract was washed with more water, separated, dried over sodiumsulfate, filtered and evaporated. The residue obtained was purified bysilica gel chromatography eluting with MeOH/dichloromethane to afford1017 (0.17 g, 69% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δ ppm2.37 (s, 3H) 3.63 (s, 2H) 3.72 (s, 3H) 5.07 (s, 2H) 6.87 (s, 1H)6.96-7.02 (m, 2H) 7.23-7.33 (m, 3H)

To a solution of 1017 (0.17 g, 0.69 mmol) in THF/MeOH/Water (10 mL, 2mL, 2 mL) was added lithium hydroxide monohydrate (0.06 g, 1.42 mmol).The resulting mixture was stirred at room temperature overnight beforeit was concentrated under reduced pressure. The residue obtained wasdiluted with water (˜20 mL) and the resulting solution was acidifiedwith acetic acid. The aqueous layer was concentrated and the product wasisolated by prep HPLC. The residue obtained was dissolved in water (5mL) and concentrated hydrochloric acid (83 μL) was added to it before itwas concentrated and dried to afford 1018 (0.15 gm) as a hydrochloridesalt.

To a suspension of carboxylic acid 1018 (105 mg, 0.39 mmol) in DMF (3mL) was added HATU (150 mg, 0.39 mmol) and stirred till reaction mixtureis clear followed by the addition of an amine 1001 (50.5 mg, 0.197 mmol)and DIPEA (0.14 mL, 0.8 mmol). The resulting mixture was stirred at roomtemperature overnight before it was quenched by the addition of water.The solid separated was filtered, washed with water and dried to afford296 (112 mg, 83%). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.76(brs, 4H) 2.38 (s, 6H) 3.01 (brs, 4H) 3.82 (s, 4H) 5.25 (s, 4H)7.09-7.38 (m, 12H) 12.64-12.67 (brs, 2H).

To a suspension of 1019 (1.5 g, 6.8 mmol) in CH₂Cl₂ (15 mL) at 0° C. wasadded Et₃N (1.9 ml, 13.6 mmol) dropwise followed by phenyl acetylchloride (1.07 ml, 8.1 mmol) dropwise. The resulting mixture was stirredat 0° C. and then slowly warmed up to room temperature for 2 days. Thecrude material was purified by silica gel chromatography eluting with0-25% EtOAc in hexane to afford 1020.

To a solution of 4-bromo-1-butyne (7 g, 53 mmol) in DMSO (30 ml) at 0°C. was added NaI (7.94 g, 53 mmol). The mixture was stirred at roomtemperature for 2 h before it was cooled to 0° C. and followed byaddition of NaCN (5.2 g, 106 mmol). The resulting mixture was heated at80° C. for 2.5 h and then stirred at room temperature overnight. Themixture was partitioned between water and EtOAc. The organic extract waswashed with water, dried over sodium sulfate, filtered and evaporated toafford 1021.

To a mixture of 1020 (400 mg, 1.18 mmol), PdCl₂(PPh₃)₂ (41 mg, 0.059mmol) and CuI (11 mg, 0.059 mmol) in Et₃N (3 ml) and THF (6 ml) underargon atmosphere was added 1021 (187 mg, 2.36 mmol), then heated at 60°C. overnight. After removal of the solvent, the residue was purified bysilica gel chromatography eluting with 0-60% EtOAc in Hexane to afford1022.

To a solution of 1022 (118 mg, 0.406 mmol) in the mixture of EtOAc (60ml) and EtOH (15 ml) was added Pd(OH)₂/C (50 mg, 0.356 mmol). Hydrogenwas bubbled through the resulting mixture and stirred for 1 h. The Pdcatalyst was filtered off and the filtrate was concentrated to afford1023.

A mixture of 1023 (127 mg, 0.431 mmol) and thiosemicarbazide (51 mg,0.561 mmol) in TFA (3 mL) was heated at 85° C. for 5 h. The reaction wascooled to room temperature and poured onto a mixture of ice-water. Themixture was basified with NaOH pellets (pH 10). The crude material waspurified by silica gel chromatography eluting with 0-6% MeOH in CH₂Cl₂to afford 1024.

To a solution of 1024 (38.4 mg, 0.104 mmol) in NMP (1 mL) at 0° C. wasadded phenyl acetyl chloride (0.017 mL, 0.125 mmol) dropwise. Theresulting mixture was stirred at 0° C. for 1.5 h before it was quenchedby addition of water (˜10 mL). The mixture was partitioned between waterand EtOAc. The organic extract was washed with water, dried over sodiumsulfate, filtered and evaporated. The crude material was purified bysilica gel chromatography eluting with 0-6% MeOH in CH₂Cl₂ to afford295. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26 (s, 1H), 8.22-8.19(d, J=8.82 Hz, 1H), 7.58-7.54 (d, J=9.72 Hz, 1H), 7.36-7.28 (m, 10H),3.81-3.78 (d, J=8.43 Hz, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs,4H).

Compound 1024 can also be prepared according to the following procedure:

To a solution of 3-amino-6-chloropyridazine (11.14 g, 86.0 mmol) in NMP(279 mL) at 19° C. was added phenylacetyl chloride (18.2 mL, 137.6 mmol)dropwise over 5 minutes with the internal temperature of the solutionmaintained T_(i)≤28° C. The resulting mixture was stirred at 19° C. for90 minutes and poured into ice water (557 mL). The white precipitate wascollected by suction filtration, rinsed with water (2×110 mL) anddiethyl ether (110 mL). The product was dried overnight under highvacuum to afford N-(6-chloropyridazin-3-yl)-2-phenylacetamide (xxx, 18.8g). ¹H NMR (300 MHz, DMSO-d₆) δ 11.57 (s, 1H), 8.40 (d, J=9.636 Hz, 1H),7.90 (d, J=9.516 Hz, 1H), 7.36 (m, 5H) 3.82 (s, 2H)

A 1000 mL three-neck flask fitted with internal temperature probe andaddition funnel was flushed with Ar_((g)). Under positive Argon pressure4-cyanobutylzinc bromide (0.5M in THF, 500 mL, 250 mmol) was chargedinto the addition funnel then added to the reaction vessel at roomtemperature. Solid N-(6-chloropyridazin-3-yl)-2-phenylacetamide (20.6 g,83.3 mmol) was added to the stirred solution at RT under Ar_((g)) flow,followed by the addition of NiCl₂(dppp) (4.52 g, 8.33 mmol). Theresulting mixture was stirred at 19° C. for 240 minutes and thenquenched with ethanol (120 mL). Water (380 mL) added to the stirred redsolution, giving a thick precipitate. Ethyl acetate (760 mL) added andstirred well for 30 minutes. The solids were removed by filtrationthrough a pad of celite. The mother liquor was then transferred to aseparatory funnel and the organic layer was washed with H₂O (380 mL),0.5% ethylenediaminetetraacetic acid solution (380 mL) and again withH₂O (380 mL). The organic layer was concentrated by rotoevaporation.Resulting red oil was redissolved in EtOAc (200 mL) and 1M HCl (380 mL)was added to the well stirred flask. After 30 minutes the mixture wastransferred to separatory funnel and the aqueous layer collected. Theorganic layer was extracted with 1M HCl (2×380 mL). The aqueous layer'spH was then adjusted to ˜7 using 7.5% sodium bicarbonate solution andthe pale yellow precipitate was collected by suction filtration, rinsedwith water (200 mL) and diethyl ether (2×200 mL). The solid was driedovernight under high vacuum to affordN-(6-(4-cyanobutyl)pyridazin-3-yl)-2-phenylacetamide (1023, 14.76 g). ¹HNMR (300 MHz, DMSO-d₆) δ 11.29 (s, 1H), 8.23 (d, J=9.036 Hz, 1H), 7.59(d, J=9.246 Hz, 1H), 7.32 (m, 5H), 3.79 (s, 2H), 2.90 (t, J=7.357 Hz,2H), 2.56 (t, J=7.038 Hz, 2H), 1.79 (t, J=7.311 Hz, 2H), 1.63 (t, J=7.01Hz, 2H)

N-(6-(4-cyanobutyl)pyridazin-3-yl)-2-phenylacetamide (14.7 g, 50.2 mmol)was charged into a 250 mL round bottom flask fitted with an open topreflux condenser. To the flask was added thiosemicarbazide (5.03 g, 55.2mmol) and trifluoroacetic acid (88 mL). The reaction slurry was heatedin a 65° C. bath for 2 h. After cooling to RT, H₂O (150 mL) was addedand stirred for 30 minutes. The mixture was then slowly transferred to astirred 7.5% sodium bicarbonate solution (1400 mL) cooled in a 0° C.bath. The precipitate was collected by suction filtration, rinsed withwater (2×200 mL), diethyl ether (2×200 mL) and dried under high vacuumovernight. The off-white solid was slurried in DMSO (200 mL) and heatedin an 80° C. bath until the internal temperature reached 65° C. DMSO(105 mL) was used to rinse sides of flask. H₂O (120 mL) was slowly addeduntil the solution became slightly cloudy and then the mixture wasremoved from heat bath and allowed to cool to ambient temperature whilestirring. The pale green precipitate was collected by suctionfiltration, rinsed with water (200 mL) and diethyl ether (2×200 mL). Thesolid was dried overnight under high vacuum to provideN-(6-(4-(5-amino-1,3,4-thiadiazol-2-yl)butyl)pyridazin-3-yl)-2-phenylacetamide(1024, 15.01 g). ¹H NMR (300 MHz, DMSO-d₆) δ 11.28 (s, 1H), 8.23 (d,J=8.916 Hz, 1H), 7.59 (d, J=8.826 Hz, 1H), 7.36 (m, 5H), 7.07 (s, 2H),3.78 (s, 2H), 2.87 (t, J=6.799 Hz, 4H), 1.69 (bm, 4H)

To a solution of dimethyl adipate (28.7 mmol, 5.0 g, 4.7 mL, 1.0 equiv.)in 20 mL of MeOH was added anhydrous hydrazine (229.6 mmol, 7.36 g, 7.51mL, 8.0 equiv.) and the mixture heated to 50° C., giving a whiteprecipitate. The mixture was heated for one hour and then allowed tocool to room temperature. The white solid was collected by filtrationand washed with additional MeOH then dried under high vacuum giving 4.6g of adipohydrizide. ¹H NMR (300 MHz, DMSO-d₆) δ 8.91 (s, 2H), 4.14 (s,4H), 2.00 (br s, 4H), 1.46 (br s, 4H).

To a 0° C. cooled slurry of adipohydrizide (12.49 mmol, 4.0 g, 1.0equiv.), potassium bicarbonate (15.61 mmol, 1.56 g, 1.25 equiv.) in 25mL of MeOH was added solid cyanogen bromide (13.74 mmol, 1.44 g, 1.1equiv.) in one portion. This mixture was stirred at 0° C. and allowed towarm to RT over one hour and then stirred overnight. The volatiles wereremoved under reduced pressure and the solids diluted with water. The pHwas adjusted to 12 with 2.5 N NaOH and the solids collected byfiltration. The white solid was washed with water and dried under highvacuum to give 1.73 g of oxadiazole 1025. ¹H NMR (300 MHz, DMSO-d₆) δ6.85 (s, 4H), 2.68 (s, 4H), 1.68 (s, 4H).

To a suspension of oxadiazole 1025 (181 mg, 0.81 mmol) in NMP (9 mL) wasadded triethylamine (0.564 mL, 4.05 mmol) and the mixture warmed to 70°C. The mixture was allowed to stir for 30 minutes followed by theaddition of phenylacetyl chloride (0.234 mL, 1.77 mmol). The reactiontemperature was held at 70° C. for 15 hours then allowed to cool to roomtemperature. The crude reaction mixture was purified by reverse phaseHPLC giving 305 (0.015 g). ¹HNMR (300 MHz, DMSO-d₆) δ 11.74 (s, 2H),7.33 (s, 10H), 3.74 (s, 4H), 2.85 (s, 4H), 1.76 (s, 4H).

Functionalization of Diacylated Cores:

To a suspension of 21 (2.25 g, 4.57 mmol) in a mixture of THF (250 mL)and H₂O (20 mL) at room temperature was added NaOH (1.83 g, 45.67 mmol)and formaldehyde solution (37% in water, 14.83 mL, 182.70 mmol). Theresulting mixture was heated at 60° C. for 7 h before it was cooled to0° C. and acidified to pH 7 with aq. HCl solution. The white precipitatewas collected by suction filtration, rinsed with water and dried toprovideN,N′-[5,5′-(butane-1,4-diyl)-bis(1,3,4-thiadiazole-5,2-diyl)]-bis(3-hydroxy-2-phenylpropanamide)(36, 624 mg). The 2^(nd) precipitation from the filtrate providedadditional product (1.29 g). ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (bs, 2H),7.35-7.30 (m, 10H), 5.09 (bs, 2H), 4.10-4.02 (m, 4H), 3.61 (d, J=8.1 Hz,2H), 3.02 (bs, 4H), 1.76 (bs, 4H).

To a suspension of 199 (300 mg, 0.572 mmol) in a mixture of THF (50 mL)and MeOH (5 ml) was added potassium carbonate (158 mg, 1.144 mmol) andformaldehyde solution (37% in water, 2 mL). The resulting mixture wasstirred at room temperature for 48 h before it was cooled to 0° C. andacidified to pH 7 with aq. HCl solution. The white precipitate wascollected by suction filtration, rinsed with water and dried. The crudematerial was purified by HPLC to afford 29. ¹H NMR (300 MHz, DMSO-d₆) δ7.34-7.26 (m, 10H), 4.13-4.02 (m, 2H), 3.81 (s, 2H), 3.62 (m, 2H), 3.24(t, 4H), 2.93 (t, 4H).

To a suspension of 199 (2.0 g, 3.81 mmol) in a mixture of THF (250 mL)and MeOH (20 ml) H₂O (20 mL) at room temperature was added 1N NaOH (20ml) and formaldehyde solution (37% in water, 15 mL). The resultingmixture was heated at 50° C. overnight before it was cooled to 0° C. andacidified to pH 7 with aq. HCl solution. The white precipitate wascollected by suction filtration, rinsed with water and dried. The crudematerial was purified by HPLC to afford 24. ¹H NMR (300 MHz, DMSO-d₆) δ12.67 (bs, 2H), 7.36-7.30 (m, 10H), 5.10 (bs, 2H), 4.10-4.02 (m, 4H),3.61 (d, 2H), 3.27 (t, 4H), 2.95 (t, 4H).

Prodrugs:

To a flask containingN,N′-(5,5′-(thiobis(ethane-2,1-diyl))bis(1,3,4-thiadiazole-5,2-diyl))bis(2-phenylacetamide)(1) (9.4 mmol, 5.0 g, 1.0 equiv.) was added 100 mL DMF, K₂CO₃ (20.98mmol, 2.89 g, 2.2 equiv.), and chloromethyl butyrate (20.98 mmol, 2.86g, 2.62 mL, 2.2 equiv.). The mixture stirred at room temperature for 15hours then diluted with 200 mL water and 200 mL EtOAc. The layers wereseparated and the aqueous layer extracted with EtOAc (2×100 mL) and theorganic layers combined, washed with water, brine and dried over Na₂SO₄.The Na₂SO₄ was removed by filtration and the volatiles removed underreduced pressure. The compounds were purified by reverse phasechromatography (MeCN, H₂O) giving 0.235 g of compound 8 and 0.126 g ofcompound 7.

¹HNMR (300 MHz, DMSO, d₆) Compound 8: δ 7.31 (m, 10H), 6.18 (s, 4H),3.82 (s, 4H), 3.17 (dd, 2H, J=6.8 Hz), 2.92 (dd, 2H, J=6.8 Hz), 2.93 (m,4H), 2.32 (dd, 2H, J=7.2 Hz), 1.54 (dt, 2H, J=7.2, 7.4 Hz), 0.87 (t, 3H,J=7.4 Hz).

¹HNMR (300 MHz, DMSO, d₆) Compound 7: δ 12.68 (s, 1H), 7.32 (m, 10H),6.18 (s, 2H), 3.82 (s, 4H), 3.26 (dd, 2H, J=7.0 Hz), 3.17 (dd, 2H, J=6.8Hz), 2.93 (m, 4H), 2.32 (dd, 2H, J=7.2 Hz), 1.54 (dt, 2H, J=7.2, 7.4Hz), 0.87 (t, 3H, J=7.4 Hz).

To a suspension of 3-morpholin-4-yl-propionic acid hydrochloride (500mg, 2.56 mmol) in DMF (20 mL) at 0° C. was addedN-(3-dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (534 mg,2.79 mmol). The resulting mixture was stirred at 0° C. for 40 min andfollowed by addition of diol 36 (642 mg, 1.16 mmol) and 4-DMAP (454 mg,3.72 mmol). The resulting mixture was stirred from 0° C. to roomtemperature over a period of 3.5 h before it was diluted with EtOAc andcold water. The organic layer was separated and washed with water (3×50mL), brine, dried (MgSO₄) and concentrated. The crude product waspurified by silica gel chromatography eluting with 10-25% MeOH in EtOActo provide{[5,5′-(butane-1,4-diyl)-bis(1,3,4-thiadiazole-5,2-diyl)]-bis(azanediyl)}-bis(3-oxo-2-phenylpropane-3,1-diyl)-bis(3-morpholinopropanoate)(188, 340 mg) and a less polar product,3-((5-{4-[5-(3-hydroxy-2-phenylpropanamido)-1,3,4-thiadiazol-2-yl]butyl}-1,3,4-thiadiazol-2-yl)amino)-3-oxo-2-phenylpropyl3-morpholinopropanoate (228, 103 mg). 188: ¹H NMR (300 MHz, DMSO-d₆) δ12.80 (s, 2H), 7.39 (m, 10H), 4.62 (t, J=9.6 Hz, 2H), 4.33-4.27 (m, 4H),3.48 (bs, 8H), 3.02 (bs, 4H), 2.45 (bs, 8H), 2.25 (bs, 8H), 1.76 (bs,4H).

228: ¹H NMR (300 MHz, MeOD-d₄) δ 7.43-7.37 (m, 10H), 4.71 (t, J=10.5 Hz,1H), 4.41 (m, 1H), 4.30-4.24 (m, 2H), 4.06-4.03 (m, 1H), 3.80-3.76 (m,1H), 3.62 (bs, 4H), 3.11 (bs, 4H), 2.63-2.52 (m, 4H), 2.40 (bs, 4H),1.90 (bs, 4H).

To a solution of diethyl trans-1,2-cyclopropanedicarboxylate (5.00 g,26.85 mmol) in THF (20 mL) at 0° C. was added a solution of LAH (67.13mL, 1.0 M in THF, 67.13 mmol) dropwise. The resulting mixture wasstirred at 0° C. for 1.5 h before it was quenched with H₂O (20 mL), 2Naq. NaOH (20 mL) and H₂O (20 mL). The mixture was stirred vigorously for1 h at room temperature before it was filtered through a plug of celite.The filtrate was dried (MgSO₄) and concentrated to provide the desireddiol (2.73 g) as a colorless oil.

A mixture of the diol (2.00 g, 19.58 mmol) in CH₂Cl₂ (75 mL) at 0° C.was added pyridine (6.34 mL, 78.33 mmol) and followed by MsCl (3.33 mL,43.08 mmol) dropwise. The resulting mixture was stirred 0° C. for 1 hbefore it was warmed up to room temperature. The reaction was quenchedwith H₂O and diluted with ether. The organic layer was washed withbrine, dried (MgSO₄) and concentrated to provide 1039. This crudeproduct was dissolved in DMSO (75 mL), and added NaCN (2.88 g, 58.75mmol) and NaI (294 mg, 1.96 mmol). The resulting mixture was heated at45° C. for 8 h before it was allowed to cool to room temperature anddiluted with EtOAc and H₂O. The organic layer was separated, washed withbrine, dried (MgSO₄) and concentrated to provide the crude product 1040which was used in the following step without purification.

A mixture of 1040 and thiosemicarbazide (3.75 g, 41.12 mmol) intrifluoroacetic acid (TFA) (20 mL) was heated at 80° C. for 5 h. Thereaction was cooled to room temperature and poured into a mixture of iceand water. Sodium hydroxide pellets were added to the mixture until itwas basic (pH 14). The white precipitate was collected by suctionfiltration, rinsed with water, ether and dried to provide 1041 (472 mg).

To a suspension of 1041 (70 mg, 0.26 mmol) in 1-Methyl-2-pyrrolidinone(NMP) (5 mL) at 0° C. was added phenylacetyl chloride (72 μL, 0.55 mmol)dropwise. The resulting mixture was stirred at 0° C. for 1 h before itwas quenched by addition of water (˜3 mL). The white precipitate wascollected by suction filtration, rinsed with water and dried to provide1035 (37 mg). ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 2H), 7.34-7.27 (m,10H), 3.82 (s, 4H), 3.04-2.75 (m, 4H), 1.14-1.12 (m, 2H), 0.63-0.59 (m,2H).

To a solution of 1020 (1.50 g, 4.42 mmol), ethynyltrimethylsilane (813uL, 5.75 mmol), PdCl₂(PPh₃)₂ (310 mg, 0.44 mmol) and CuI (59 mg, 0.31mmol) in THF (20 mL) under argon atmosphere at room temperature wasadded Et₃N (6.16 mL, 44.23 mmol). The resulting mixture was heated at50° C. for 5 h before it was allowed to cool to room temperature andfiltered through a plug of celite. The filtrate was concentrated and thecrude residue was purified by flash column chromatography over silicagel eluting with 10-50% EtOAc in hexanes to provide the desired product(1.21 g) as a solid.

A mixture of the foregoing intermediate (1.07 g, 3.48 mmol) and K₂CO₃(0.40 g, 2.90 mmol) in MeOH (100 mL) was stirred at room temperature for5 h before it was concentrated under reduced pressure. The residue wasre-dissolved in a mixture of EtOAc and H₂O, and was neutralized with 1Naq. HCl solution to pH 7. The organic layer was separated, washed withbrine, dried (MgSO₄) and concentrated. The crude residue was purified byflash column chromatography over silica gel eluting with 10-50% EtOAc inhexanes to provide the desired alkyne 1036 (0.48 g) as a white solid.

To a solution of alkyne 1036 (52 mg, 0.22 mmol) in pyridine (5 mL) atroom temperature was added CuCl (4.3 mg, 0.04 mmol). The resultingmixture was stirred under a stream of air for 40 min as all of thestarting material was consumed. The reaction mixture was diluted withsaturated aq. NH₄Cl solution (˜2 mL). The off-white precipitate wascollected by suction filtration, washed with H₂O and dried. This crudebis-acetylene product 1037 (52 mg) was used in the following stepwithout further purification.

A mixture of 1037 (52 mg) and Pd(OH)₂/C (100 mg) in a mixture of DMF (5mL) and THF (10 mL) was stirred at room temperature under 1 atmosphereof H₂ for 3 h as all of the starting material was consumed. Thepalladium catalyst was filtered off and the filtrate was concentrated.The crude residue was purified by column chromatography over silica geleluting with 1-10% MeOH in CH₂Cl₂ to provide the desired product 1038(18 mg) as a solid. ¹H NMR (300 MHz, DMSO-d₆) δ 11.26 (s, 2H), 8.20 (d,J=8.97 Hz, 2H), 7.56 (d, J=8.77 Hz, 2H), 7.36-7.24 (m, 10H), 3.78 (s,4H), 2.90 (bs, 4H), 1.73 (bs, 4H).

To a solution of adiponitrile (19.02 g, 175.8 mmol) in TFA (50 mL) wasadded thiosemicarbazide (16.02 g, 175.8 mmol) and the mixture heated to70° C. for 4 hours under an atmosphere of Argon. The mixture was allowedto cool to room temperature and the volatiles removed under reducedpressure. The residue was diluted with water (200 mL) and the pHadjusted to 7 with solid NaOH giving a white precipitate that wascollected by filtration and washed with water. The solids were driedunder high vacuum giving 9.22 g of 1081. ¹H NMR (DMSO, d₆): δ 7.02 (brs, 2H) 2.84 (m, 2H), 2.55 (m, 2H), 1.67 (m, 4H).

To a solution of 1081 (0.625 g, 2.87 mmol) in NMP (12.5 mL) was addedphenylacetyl chloride (0.487 g, 0.42 mL, 3.15 mmol) dropwise and themixture stirred at room temperature for one hour under an atmosphere ofArgon. The mixture was poured into water (100 mL) and the solidscollected by filtration. The solids were washed with water and driedunder high vacuum to give 0.805 g of 1082. ¹H NMR (DMSO, d₆): δ 12.65(s, 1H) 7.31 (m, 5H), 3.80 (s, 2H), 3.00 (t, 2H, J=7.3 Hz), 2.53 (t, 2H,J=7.1 Hz), 1.78 (dq, 2H, J=7.3, 7.1 Hz), 1.61 (dq, 2H, J=7.3, 7.1 Hz).

To a solution of 1082 (0.49 g, 1.33 mmol) in TFA (10 mL) was addedthiosemicarbazide (0.23 g, 1.46 mmol) and the mixture heated at 70° C.overnight under an atmosphere of Argon. The mixture was allowed to coolto room temperature and the volatiles removed under reduced pressure.The residue was diluted with water (50 mL) and the pH adjusted to 7 withsolid NaOH giving a white precipitate that was collected by filtrationand washed with water. The solids were dried under high vacuum giving0.367 g of 1083. ¹H NMR (DMSO, d₆): δ 12.70 (s, 1H) 7.34 (br s, 5H),7.16 (s, 2H), 3.82 (s, 2H), 3.01 (s, 2H), 2.84 (S, 2H), 1.71 (br s, 4H).

To a solution of 1083 (0.10 g, 0.267 mmol),2,4-difluoro-3-methoxyphenylacetic acid (0.058 g, 0.267 mmol), EDC(0.127 g, 0.667 mmol), HOBt (0.090 g, 0.667 mmol) in DMF (4 mL) wasadded DIEA (0.171 g, 0.231 mL, 1.335 mmol) and the mixture stirredovernight under an atmosphere of Argon. The mixture was poured intowater (20 mL) and the solids formed were collected by filtration, washedwith water and dried under high vacuum. The crude 1084 was used in thefollowing step without purification. To a solution of 1084 (0.050 g,0.091 mmol) in dichloromethane (1 mL) was added BBr₃ (1.0 mL, 1 mmol,1.0 M in dichloromethane) and the mixture stirred for 4 hours at roomtemperature under an atmosphere of Argon. The volatiles were removedunder reduced pressure and the residue diluted with dichloromethane (5mL). The volatiles were removed under reduced pressure and the residuediluted with water (15 mL) and the pH adjusted to 12. The aqueous layerwas washed with dichloromethane (4×5 mL) and the pH adjusted to 4. Thesolids were collected by filtration, washed with water and dried underhigh vacuum giving 0.029 g of 346. ¹HNMR (DMSO, d₆): δ 12.66 (s, 2H),10.12 (s, 1H), 7.33 (s, 5H), 7.00 (m, 1H), 6.80 (m, 1H), 3.84 (s, 2H),3.81 (s, 2H), 3.02 (br s, 4H), 1.76 (br s, 4H).

To a solution of 1083 (0.05 g, 0.133 mmol),Boc-3-aminomethyl-phenylacetic acid (0.035 g, 0.133 mmol), EDC (0.064 g,0.332 mmol), HOBt (0.045 g, 0.332 mmol) in DMF (8 mL) was added DIEA(0.086 g, 0.115 mL, 0.665 mmol) and the mixture stirred overnight underan atmosphere of Argon. The mixture was poured into water (20 mL) andthe solids formed were collected by filtration, washed with water anddried under high vacuum to give 0.023 g of 375. ¹HNMR (DMSO, d₆): δ12.66 (s, 2H), 7.27 (m, 10H), 4.11 (br s, 2H), 3.81 (s, 2H), 3.79 (s,2H), 3.01 (br s, 4H), 1.76 (br s, 4H), 1.39 (s, 9H).

A flask was charged with 1024 (100 mg, 0.27 mmol), tropic acid (54 mg,0.326 mmol) in DMF (2 ml) at 0° C. was added HOBT (88 mg, 0.652 mmol)followed by EDCI (156 mg, 0.815 mmol). The resulting mixture was slowlywarmed up to room temperature and stirred for 3 h before it was quenchedby addition of water (˜10 mL). The white precipitate was collected bysuction filtration, rinsed with more water and dried to afford 314. ¹HNMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26 (s, 1H), 8.22-8.19 (d,J=8.82 Hz, 1H), 7.58-7.54 (d, J=9.72 Hz, 1H), 7.36-7.28 (m, 10H),4.10-4.05 (m, 2H), 3.78 (s, 3H), 3.65 (s, 1H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H).

A flask was charged with 1024 (500 mg, 1.36 mmol), DL-mandelic acid (248mg, 1.63 mmol) in DMF (10 ml) at 0° C. was added HOBT (441 mg, 3.26mmol) followed by EDCI (781 mg, 4.08 mmol). The resulting mixture wasstirred at 0° C. for 10 minutes then warmed up to room temperature andstirred for 10 minutes before it was quenched by addition of water (˜50mL) at 0° C. The white precipitate was collected by suction filtration,rinsed with more water and dried to afford 315. ¹H NMR (300 MHz,DMSO-d₆) δ 12.65 (s, 1H), 11.26 (s, 1H), 8.22-8.19 (d, J=8.82 Hz, 1H),7.58-7.50 (m, 3H), 7.36-7.28 (m, 8H), 6.35 (s, 1H), 5.32 (s, 1H), 3.78(s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

To a suspension of 3-morpholin-4-yl-propionic acid hydrochloride (209mg, 1.07 mmol) in DMF (10 ml) was added EDCI (308 mg, 1.61 mmol). Theresulting mixture was stirred at 0° C. for 1 hour and followed byaddition of 315 (447 mg, 0.889 mmol) and 4-DMAP (261 mg, 2.14 mmol). Theresulting mixture was stirred from 0° C. to room temperature over aperiod of 6 h before it was quenched by addition of ice water (˜50 mL).The white precipitate was collected by suction filtration, rinsed withmore water. The crude material was purified by silica gel chromatographyeluting with 0-6% MeOH in EtOAc to afford 334. ¹H NMR (300 MHz, DMSO-d₆)δ 12.95 (s, 1H), 11.26 (s, 1H), 8.22-8.19 (d, J=9.45 Hz, 1H), 7.58-7.26(m, 11H), 6.14 (s, 1H), 3.78 (s, 2H), 3.54 (bs, 4H), 3.01 (bs, 2H), 2.90(bs, 2H), 2.63 (bs, 4H), 2.38 (bs, 4H), 1.73 (bs, 4H).

Compound 317 was prepared according to the procedure above for compound315. ¹H NMR (300 MHz, DMSO-d₆) δ 12.40 (s, 1H), 11.26 (s, 1H), 8.22-8.19(d, J=9.03 Hz, 1H), 7.58-7.54 (d, J=9.72 Hz, 1H), 7.36-6.87 (m, 9H),6.35 (bs, 1H), 5.30 (s, 1H), 3.78 (m, 5H), 3.01 (bs, 2H), 2.90 (bs, 2H),1.73 (bs, 4H).

Compound 318 was prepared according to the procedure above for compound315. ¹H NMR (300 MHz, DMSO-d₆) δ 12.50 (s, 1H), 11.26 (s, 1H), 8.22-8.19(d, J=9.43 Hz, 1H), 7.60-7.27 (m, 10H), 6.51 (bs, 1H), 5.35 (s, 1H),3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

A flask was charged with 1024 (50 mg, 0.135 mmol), 3-chlorophenylaceticacid (28 mg, 0.163 mmol) in DMF (1 ml) at 0° C. was added HOBT (44 mg,0.326 mmol) followed by EDCI (78 mg, 0.408 mmol). The resulting mixturewas slowly warmed up to room temperature and stirred for 1 h before itwas quenched by addition of water (˜5 mL). The white precipitate wascollected by suction filtration, rinsed with more water and ether thendried to afford 335. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26(s, 1H), 8.22-8.19 (d, J=8.82 Hz, 1H), 7.58-7.54 (d, J=9.72 Hz, 1H),7.36-7.28 (m, 9H), 3.84 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H).

Compound 337 was prepared according to the procedure above for compound335. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26 (s, 1H), 9.38 (s,1H), 8.22-8.19 (d, J=8.37 Hz, 1H), 7.58-7.54 (d, J=9.63 Hz, 1H),7.36-7.09 (m, 6H), 6.75-6.65 (m, 3H), 3.78 (s, 2H), 3.70 (s, 2H), 3.01(bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

339, 341, 382: A flask was charged with 1024 (100 mg, 0.27 mmol),Boc-3-aminomethyl-phenylacetic acid (86 mg, 0.325 mmol) in DMF (2 ml) at0° C. was added HOBT (88 mg, 0.65 mmol) followed by EDCI (156 mg, 0.812mmol). The resulting mixture was stirred at 0° C. for 5 minutes thenwarmed up to room temperature and stirred for 1.5 h before it wasquenched by addition of water (˜10 mL) at 0° C. The white precipitatewas collected by suction filtration, rinsed with more water and etherthen dried to afford 339. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H),11.26 (s, 1H), 8.22-8.19 (d, J=8.82 Hz, 1H), 7.58-7.54 (d, J=9.42 Hz,1H), 7.36-7.13 (m, 9H), 4.13-4.11 (d, J=10.62, 2H), 3.78 (s, 4H), 3.01(bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H), 1.38 (s, 9H).

To a suspension of 339 (50 mg, 0.081 mmol) in dichloromethane (2 ml) wasadded TFA (2 ml) at 0° C. The resulting mixture was stirred at roomtemperature for 20 minutes before it was evaporated under vacuo todryness. Ether was added and the white precipitate was collected bysuction filtration, rinsed with more ether and dichloromethane thendried to afford 341. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26(s, 1H), 8.22-8.19 (d, J=8.82 Hz, 1H), 8.14-8.11 (bs, 2H), 7.58-7.54 (d,J=9.42 Hz, 1H), 7.36-7.13 (m, 9H), 4.06-4.03 (m, 2H), 3.84 (s, 2H), 3.78(s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

To a solution of 341 (10 mg, 0.0159 mmol) in DMF (1 ml) at 0° C. wasadded triethylamine (4.4 ul, 0.0317 mmol) drop wise followed by ethylchloroformate (1.8 ul, 0.0191 mmol) drop wise. The resulting mixture wasslowly warmed up to room temperature and stirred for 30 minutes beforeit was quenched by addition of water (˜1 mL) at 0° C. The mixture waspartitioned between water and EtOAc. The organic extract was washed withwater, dried over sodium sulfate, filtered and evaporated. The crudematerial was purified by silica gel chromatography eluting with 0-6%MeOH in CH₂Cl₂ to afford 382. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H),11.26 (s, 1H), 8.22-8.19 (d, J=8.82 Hz, 1H), 7.67-7.58 (bs, 1H),7.58-7.54 (d, J=9.42 Hz, 1H), 7.36-7.13 (m, 9H), 4.18-4.16 (m, 2H),4.06-4.0 (q, 2H), 3.78 (s, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs,4H), 1.19-1.13 (t, 3H).

Compound 431 was prepared according to the procedure above for compound382 with the appropriate reagents. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s,1H), 11.26 (s, 1H), 8.35 (s, 1H), 8.22-8.19 (d, J=8.88 Hz, 1H),7.57-7.54 (d, J=9.51 Hz, 1H), 7.38-7.15 (m, 9H), 4.25-4.24 (d, J=5.64Hz, 2H), 3.76 (s, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.87 (s, 3H), 1.73(bs, 4H).

Compound 432 was prepared according to the procedure above for compound382 with the appropriate reagents. ¹H NMR (300 MHz, DMSO-d₆) δ 12.63 (s,1H), 11.26 (s, 1H), 9.04-9.01 (m, 1H), 8.22-8.19 (d, J=8.91 Hz, 1H),7.93-7.89 (d, J=9.51 Hz, 2H), 7.58-7.25 (m, 13H), 4.50-4.48 (d, J=5.91Hz, 2H), 3.78 (s, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

Compound 433 was prepared according to the procedure above for compound382 with the appropriate reagents. ¹H NMR (300 MHz, DMSO-d₆) δ 12.63 (s,1H), 11.26 (s, 1H), 8.31-8.21 (m, 1H), 8.20-8.19 (d, J=9.57 Hz, 1H),7.57-7.54 (d, J=8.73 Hz, 1H), 7.35-7.13 (m, 9H), 4.26-4.24 (d, J=5.52Hz, 2H), 3.78 (s, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H), 2.0 (s, 3H), 1.73(bs, 4H), 0.86-0.85 (d, J=3.99 Hz, 6H).

To a solution of 341 (70 mg, 0.111 mmol) in DMF (1 ml) at 0° C. wasadded triethylamine (31 ul, 0.22 mmol) drop wise followed by5-bromovaleryl chloride (12 ul, 0.122 mmol) drop wise. The resultingmixture was slowly warmed up to room temperature and stirred for 1 h.Potassium tert-butoxide (50 mg, 0.445 mmol) was then added to thereaction mixture at 0° C. The resulting mixture was slowly warmed up toroom temperature and stirred for overnight before it was quenched byaddition of water (˜2 mL) at 0° C. The mixture was partitioned betweenwater and EtOAc. The organic extract was washed with water, dried oversodium sulfate, filtered and evaporated. The crude material was purifiedby silica gel chromatography eluting with 0-6% MeOH in CH₂Cl₂ to afford476. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26 (s, 1H), 8.22-8.19(d, J=8.82 Hz, 1H), 7.58-7.54 (d, J=9.42 Hz, 1H), 7.36-7.13 (m, 9H),4.50 (s, 2H), 3.78 (s, 4H), 3.35 (bs, 2H), 3.20 (bs, 2H), 3.01 (bs, 2H),2.90 (bs, 2H), 2.30 (bs, 2H), 1.68-1.80 (d, 6H).

Compound 340 was prepared according to the procedure above for compound315 with the appropriate reagents. ¹H NMR (300 MHz, DMSO-d₆) δ 12.50 (s,1H), 11.26 (s, 1H), 8.22-8.19 (d, J=9.24 Hz, 1H), 7.60-7.27 (m, 10H),6.51 (bs, 1H), 5.35 (s, 1H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H),1.73 (bs, 4H).

Compound 349 was prepared according to the procedure above for compound315 with the appropriate reagents. ¹H NMR (300 MHz, DMSO-d₆) δ 12.41 (s,1H), 11.26 (s, 1H), 8.22-8.19 (d, J=8.76 Hz, 1H), 7.58-7.27 (m, 11H),6.36 (s, 1H), 5.34 (s, 1H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H),1.73 (bs, 4H).

Compound 350 was prepared according to the procedure above for compound315 with the appropriate reagents. ¹H NMR (300 MHz, DMSO-d₆) δ 12.41 (s,1H), 11.26 (s, 1H), 8.22-8.19 (d, J=8.67 Hz, 1H), 7.58-7.27 (m, 11H),6.34 (s, 1H), 5.34 (s, 1H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H),1.73 (bs, 4H).

Compound 351 was prepared according to the procedure above for compound315 with the appropriate reagents. ¹H NMR (300 MHz, DMSO-d₆) δ 12.50 (s,1H), 11.26 (s, 1H), 8.21-8.18 (d, J=8.67 Hz, 1H), 7.58-7.54 (d, J=9.72Hz, 1H), 7.36-7.23 (m, 8H), 6.67 (s, 1H), 5.40 (s, 1H), 3.78 (s, 2H),3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

To a solution of 1024 (50 mg, 0.136 mmol) in DMF (1 ml) at 0° C. wasadded triethylamine (38 ul, 0.271 mmol) drop wise followed by benzylisocyanate (20 ul, 0.163 mmol) drop wise. The resulting mixture wasslowly warmed up to room temperature and stirred for 40 minutes beforeit was quenched by addition of water (˜5 mL) at 0° C. The whiteprecipitate was collected by suction filtration, rinsed with more water.The crude material was purified by silica gel chromatography elutingwith 0-6% MeOH in CH₂Cl₂ to afford 352. ¹H NMR (300 MHz, DMSO-d₆) δ11.26 (s, 1H), 10.82 (s, 1H), 8.22-8.19 (d, J=9.42 Hz, 1H), 7.58-7.54(d, J=8.79 Hz, 1H), 7.36-7.31 (m, 10H), 7.06 (bs, 1H), 4.37-4.35 (d,J=5.22 Hz, 2H), 3.78 (s, 2H), 2.99-2.90 (m, 4H), 1.73 (bs, 4H).

Compound 353 was prepared according to the procedure above for thepreparation of compound 335. ¹H NMR (300 MHz, DMSO-d₆) δ 12.57 (s, 1H),11.26 (s, 1H), 8.22-8.19 (d, J=9.45 Hz, 1H), 7.57-7.54 (d, J=9.48 Hz,1H), 7.36-7.25 (m, 6H), 6.91-6.84 (m, 3H), 3.76 (m, 7H), 3.01 (bs, 2H),2.90 (bs, 2H), 1.73 (bs, 4H).

A flask was charged with 1024 (50 mg, 0.135 mmol), 2-pyridine aceticacid hydrochloride (27 mg, 0.156 mmol) in DMF (1 ml) at 0° C. was addedpropylphosphonic anhydride solution (91 ul) followed by triethylamine(54 ul, 0.39 mmol). The resulting mixture was slowly warmed up to roomtemperature and stirred for 1 h before it was quenched by addition ofwater (˜5 mL). The white precipitate was collected by suctionfiltration, rinsed with more water and ether then dried to afford 354.¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26 (s, 1H), 8.51 (s, 1H),8.22-8.19 (d, J=8.97 Hz, 1H), 7.81-7.76 (m, 1H), 7.58-7.54 (d, J=9.06Hz, 1H), 7.42-7.26 (m, 7H), 4.02 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H),2.90 (bs, 2H), 1.73 (bs, 4H).

Compound 355 was prepared according to the procedure above for thepreparation of compound 354. ¹H NMR (300 MHz, DMSO-d₆) δ 12.70 (s, 1H),11.26 (s, 1H), 8.53-8.49 (m, 1H), 8.22-8.19 (d, J=9.0 Hz, 1H), 7.77-7.73(d, J=8.46 Hz, 1H), 7.58-7.54 (d, J=9.48 Hz, 1H), 7.38-7.26 (m, 7H),3.88 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

Compounds 309 and 310 were prepared according to the procedure above forthe preparation of compound 354.

To a solution of 1043 (3.2 g, 19.5 mmol) in carbon tetrachloride (150mL) was added N-bromosuccinimide (3.47 g, 19.6 mmol) and benzoylperoxide (10 mg, catalytic). The resulting mixture was refluxedovernight before it was filtered hot. The filtrate was concentratedunder reduced pressure and the residue obtained was purified by silicagel chromatography eluting with 20% ethylacetate/hexane to afford 1044(2 g, 42% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δ ppm 3.66(s, 2H) 3.74 (s, 3H) 4.51 (s, 2H) 7.35 (m, 4H)

To a solution of 1044 (0.243 g, 1 mmol) in acetone (10 mL) was added2-methyl imidazole (0.41 g, 5 mmol). The resulting mixture was refluxedovernight before it was concentrated under reduced pressure and theresidue obtained was diluted with water (˜100 mL). The resultingsolution was partitioned between water and ethyl acetate. The organicextract was washed with more water, separated, dried over sodiumsulfate, filtered and evaporated. The residue obtained was purified bysilica gel chromatography eluting with MeOH/dichloromethane to afford1045 (0.17 g, 69% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δ ppm2.37 (s, 3H) 3.63 (s, 2H) 3.72 (s, 3H) 5.07 (s, 2H) 6.87 (s, 1H)6.96-7.02 (m, 2H) 7.23-7.33 (m, 3H)

To a solution of 1045 (0.17 g, 0.69 mmol) in THF/MeOH/Water (10 mL, 2mL, 2 mL) was added lithium hydroxide monohydrate (0.06 g, 1.42 mmol).The resulting mixture was stirred at room temperature overnight beforeit was concentrated under reduced pressure. The residue obtained wasdiluted with water (˜20 mL) and the resulting solution was acidifiedwith acetic acid. The aqueous layer was concentrated and the product wasisolated by prep HPLC. The residue obtained was dissolved in water (mL)and concentrated hydrochloric acid (mL) was added to it before it wasconcentrated and dried to afford 1046 (0.15 gm) as a hydrochloride salt.

To a suspension of carboxylic acid 1046 (41.8 mg, 0.157 mmol) in DMF (3mL) was added HATU (61.3 mg, 0.161 mmol) and stirred till reactionmixture is clear followed by the addition of an amine 1024 (52.5 mg,0.142 mmol) and DIPEA (50 ul, 0.29 mmol). The resulting mixture wasstirred at room temperature overnight before it was quenched by theaddition of water. The resulting solution was partitioned between waterand ethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated. Theresidue obtained was triturated with ether. The solid separated wasfiltered, washed with ether and dried to afford 380 (40 mg, 48%). ¹H NMR(300 MHz, Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.91-3.02 (brs, 4H)3.78-3.83 (m, 4H) 5.34 (s, 2H) 7.16-7.57 (m, 12H) 8.19-8.22 (d, 1H)11.26 (s, 1H) 12.65 (brs, 1H)

To an ice cold solution of 1048 (5 g, 0.033 mol) in methanol (50 mL) wasadded thionyl chloride (0.2 mL) and the resulting mixture was stirred atroom temperature overnight before it was concentrated under reducedpressure. The residue obtained was dried at high vacuum overnight toafford 1049 (5 gm) as an oil and was used as such for the next step. ¹HNMR (300 MHz, Chloroform-d) δ ppm 3.62 (s, 2H) 3.74 (s, 3H) 6.76-6.87(m, 3H) 7.18-7.21 (m, 1H).

To a solution of 1049 (1 g, 6 mmol) in DMF (20 mL) was added potassiumcarbonate (2.08 g, 15 mmol), 1050 (1.225 g, 6.62 mmol) and sodium iodide(10 mg). The resulting mixture was stirred at 80° C. overnight before itwas diluted with water (˜100 mL). The resulting solution was partitionedbetween water and ethyl acetate. The organic extract was washed withmore water, separated, dried over sodium sulfate, filtered andevaporated. The residue obtained was purified by silica gelchromatography eluting with MeOH/dichloromethane to afford 1051 (1 g,60% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δ ppm 2.61 (s, 4H)2.83 (t, 2H) 3.62 (s, 2H) 3.63 (s, 3H) 3.73-3.77 (m, 4H) 4.14 (t, 2H)6.88-6.91 (m, 3H) 7.26-7.29 (m, 1H)

To a solution of 1051 (1 g, 3.57 mmol) in THF/MeOH/Water (30 mL, 5 mL, 5mL) was added lithium hydroxide monohydrate (0.3 g, 7.14 mmol). Theresulting mixture was stirred at room temperature overnight before itwas concentrated under reduced pressure. The residue obtained wasdiluted with water (˜50 mL) and the resulting solution was acidifiedwith 1N hydrochloric acid. The aqueous layer was concentrated and theproduct was isolated by prep HPLC. The residue obtained was dissolved inwater (mL) and concentrated hydrochloric acid (mL) was added to itbefore it was concentrated and dried to afford 1052 as a hydrochloridesalt.

To a suspension of carboxylic acid 1052 (47.4 mg, 0.157 mmol) in DMF (3mL) was added HATU (61.3 mg, 0.161 mmol) and stirred till reactionmixture is clear followed by the addition of an amine 1024 (52.5 mg,0.142 mmol) and DIPEA (50 ul, 0.29 mmol). The resulting mixture wasstirred at room temperature overnight before it was quenched by theaddition of water. The resulting solution was partitioned between waterand ethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated. Theresidue obtained was purified by silica gel chromatography eluting withMeOH/dichloromethane to afford 381 (40 mg, 46% yield). ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.72 (t, 2H) 2.89-2.9 (m, 4H)3.02 (brs, 4H) 3.336 (m, 2H) 3.76-3.78 (m, 2H) 4.09 (m, 2H) 6.88-6.93(m, 3H) 7.24-7.36 (m, 6H) 7.54-7.58 (d, 1H) 8.18-8.21 (d, 1H) 11.26 (s,1H) 12.65 (brs, 1H).

To a solution of 1044 (2.29 g, 0.01 mol) in DMF (100 mL) was addedpotassium carbonate (1.38 g, 0.01 mmol) and pyrazole (0.68 g, 0.01 mol).The resulting mixture was stirred at 70° C. for 5 hr before it wasdiluted with water (˜100 mL). The resulting solution was partitionedbetween water and ethyl acetate. The organic extract was washed withmore water, separated, dried over sodium sulfate, filtered andevaporated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1053 (1 g, 50%yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm 3.94 (s, 3H) 5.40 (s, 2H)6.33 (s, 1H) 7.42-7.48 (m, 3H) 7.58 (s, 1H) 7.95 (s, 1H) 8.00-8.02 (m,1H)

To an ice cold solution of 1053 (1 g, 4.62 mmol) in THF (20 mL) wasadded lithium aluminum hydride (2.5 mL, 2M/THF) drop wise and theresulting reaction mixture was stirred at 0° C. for 5 hr before it wasquenched with saturated Rochelle salt solution. The resulting solutionwas partitioned between water and ethyl acetate. The organic extract waswashed with more water, separated, dried over sodium sulfate, filteredand evaporated to afford 1054 (0.8 g, 92% yield). ¹H NMR (300 MHz,Chloroform-d) δ ppm 4.71 (s, 2H) 5.35 (s, 2H) 6.30 (s, 1H) 7.15-7.43 (m,5H) 7.58 (s, 1H)

To a solution of 1054 (0.8 g, 4.2 mmol) in dichloromethane (20 mL) wasadded thionyl chloride and the resulting mixture was stirred at roomtemperature for 5 hr before it was concentrated under the reducedpressure. The residue obtained was dried at high vacuum overnight toafford 1055 (1 g, 97% yield) as a HCl salt. ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 4.75 (s, 2H) 5.38 (s, 2H) 6.30 (s, 1H)7.19-7.50 (m, 5H) 7.86 (s, 1H) 11.49-11.60 (brs, 1H)

To a solution of 1055 (1 g, 4.1 mmol) in DMF (20 mL) was added sodiumcyanide (0.625 g, 12.7 mmol) and sodium iodide (20 mg) and the resultingreaction mixture was stirred at 70° C. for 2 hr before it was dilutedwith water. The resulting solution was partitioned between water andethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated. Theresidue obtained was purified by silica gel chromatography eluting withEtOAc/Hexane to afford 1056 (0.664 g, 83% yield). ¹H NMR (300 MHz,Chloroform-d) δ ppm 3.76 (s, 2H) 5.38 (s, 2H) 6.35 (s, 1H) 7.19-7.46 (m,5H) 7.61 (s, 1H)

To a solution of 1056 (0.664 g, 3.3 mmol) in dioxane (5 mL) was addedconcentrated hydrochloric acid (5 mL) and the resulting reaction mixturewas stirred at 90° C. overnight before it was concentrated under thereduced pressure. The residue obtained was purified through prep HPLCand was converted to HCl salt to afford 1057 (0.5 g, 40% yield). ¹H NMR(300 MHz, Dimethylsulfoxide-d6) δ ppm 3.55 (s, 2H) 5.33 (s, 2H) 6.29 (s,1H) 7.14-7.20 (m, 4H) 7.48 (s, 1H) 7.84 (s, 1H) 11.97-11.99 (brs, 1H)

To a suspension of carboxylic acid 1057 (19.8 mg, 0.0785 mmol) in DMF (2mL) was added HATU (30.6 mg, 0.08 mmol) and stirred till reactionmixture is clear followed by the addition of an amine 1024 (26.25 mg,0.07 mmol) and DIPEA (25 ul, 0.15 mmol). The resulting mixture wasstirred at room temperature overnight before it was quenched by theaddition of water. The solid separated was filtered, washed with waterand dried to afford 395 (18 mg, 45% yield). ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.89-3.04 (m, 4H) 3.78 (s,4H) 5.33 (s, 2H) 6.27-6.28 (s, 1H) 7.09-7.58 (m, 11H) 7.82 (s, 1H)8.19-8.21 (d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H)

To a solution of 1044 (1 g, 4.1 mmol) in THF (5 mL) was added 2M/THFmethyl amine solution (2 mL) and the resulting reaction mixture wasstirred at room temperature overnight before it was concentrated underthe reduced pressure. The residue obtained was partitioned between waterand ethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated. Theresidue obtained was purified by silica gel chromatography eluting withMeOH/dichloromethane to afford 1058 (0.26 g, 33% yield). ¹H NMR (300MHz, Chloroform-d) δ ppm 2.49 (s, 3H) 3.66 (s, 2H) 3.73 (s, 3H) 3.79 (s,2H) 7.2-7.33 (m, 4H).

To a solution of 1058 (0.26 g, 1.35 mmol) in dichloromethane (5 mL) wasadded boc anhydride (0.293 g, 1.35 mmol) and the resulting reactionmixture was stirred at room temperature for 4 hr before it was purifiedby silica gel chromatography eluting with EtOAc/Hexane to afford 1059(0.3 g, 77% yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm 1.5 (s, 9H)2.84 (s, 3H) 3.66 (s, 2H) 3.73 (s, 3H) 4.44 (s, 2H) 7.17-7.32 (m, 4H).

To an ice cold solution of 1059 (0.3 g, 1.02 mmol) in dioxane (3 mL) andwater (2 mL) was added lithium hydroxide monohydrate (0.086 g, 2.04mmol) and the resulting reaction mixture was stirred at 0° C. for 3 hrbefore it was acidified with 1N HCl. The resulting solution waspartitioned between water and ethyl acetate. The organic extract waswashed with more water, separated, dried over sodium sulfate, filteredand evaporated. The residue obtained was dried at high vacuum overnightto afford 1060 (0.2 g, 70% yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm1.5 (s, 9H) 2.84 (s, 3H) 3.66 (s, 2H) 4.43 (s, 2H) 7.17-7.32 (m, 4H)

To a suspension of carboxylic acid 1060 (51.1 mg, 0.183 mmol) in DMF (3mL) was added HATU (69.7 mg, 0.183 mmol) and stirred till reactionmixture is clear followed by the addition of an amine 1024 (61.3 mg,0.166 mmol) and DIPEA (58 ul, 0.33 mmol). The resulting mixture wasstirred at room temperature overnight before it was quenched by theaddition of water. The resulting solution was partitioned between waterand ethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated. Theresidue obtained was purified by silica gel chromatography eluting withMeOH/dichloromethane to afford 445 (0.06 g, 57% yield). ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.37-1.38 (s, 9H) 1.74 (brs, 4H) 2.76 (s,3H) 2.89 (brs, 2H) 3.02 (brs, 2H) 3.78-3.80 (m, 4H) 4.36 (s, 2H)7.11-7.36 (m, 9H) 7.54-7.57 (d, 1H) 8.18-8.21 (d, 1H) 11.26 (s, 1H)12.65 (brs, 1H).

Prep of 445 Via 396 Deprotection to 408 and Re-Acylation:

To an ice cold solution of 408 (26 mg, 0.04 mmol) in DMF (1 mL) wasadded triethylamine (12.3 uL, 0.088 mmol) and acetyl chloride (3.16 uL,0.044 mmol). The resulting mixture was stirred at room temperature for 2hr before it was diluted with water. The solid separated was filtered,washed with water and dried at high vacuum overnight to afford 445 (10mg, 48% yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.74 (brs,4H) 2.05 (m, 3H) 2.91-3.02 (m, 7H) 3.78-3.82 (m, 4H) 4.49-4.56 (m, 2H)7.18-7.36 (m, 9H) 7.55-7.58 (d, 1H) 8.18-8.21 (d, 1H) 8.75-8.7 (brs, 2H)11.26 (s, 1H) 12.65 (brs, 1H).

Compound 401 was prepared according to the procedure above for thepreparation of compound 339. ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δppm 1.40 (s, 9H) 1.75 (brs, 4H) 2.87 (brs, 2H) 2.89 (brs, 2H) 3.78 (s,4H) 4.09-4.11 (brs, 2H) 7.18-7.36 (m, 9H) 7.54-7.58 (d, 1H) 8.18-8.21(d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H)

Compound 413 was prepared according to the procedure above for thepreparation of compound 315. ¹H NMR (300 MHz, DMSO-d₆) δ 12.68 (bs, 1H),11.26 (s, 1H), 8.20 (d, J=9.46 Hz, 1H), 7.58-7.26 (m, 10H), 3.90 (s,2H), 3.78 (s, 2H), 3.02 (bs, 2H), 2.90 (bs, 2H), 1.74 (bs, 4H).

Compound 415 was prepared according to the procedure above for thepreparation of compound 315: ¹H NMR (300 MHz, DMSO-d₆) δ 12.48 (s, 1H),11.26 (s, 1H), 8.20 (d, J=8.95 Hz, 1H), 7.75 (s, 1H), 7.58-7.26 (m, 9H),6.52 (m, 1H), 5.35 (m, 1H), 3.78 (s, 2H), 3.02 (m, 2H), 2.90 (m, 2H),1.74 (bs, 4H).

To a solution of 1063 (6.31 g, 24.9 mmol) in ethanol was added lithiumhydroxide monohydrate (1.048 g, 24.9 mmol) and the resulting reactionmixture was stirred at room temperature for 3 hr before it wasconcentrated under the reduced pressure. The residue obtained wasdiluted with water and was acidified with 6N HCl. The solution wasextracted with ethyl acetate. The organic extract was washed with morewater, separated, dried over sodium sulfate, filtered and evaporated.The residue obtained was purified by silica gel chromatography elutingwith EtOAc/hexane to afford 1064 (3 g, 53% yield).

To a suspension of carboxylic acid 1064 (0.1 g, 0.44 mmol) in DMF (2 mL)was added HATU (0.17 g, 0.44 mmol) and stirred till reaction mixture isclear followed by the addition of an amine 1024 (0.15 g, 0.4 mmol) andDIPEA (0.14 mL, 0.8 mmol). The resulting mixture was stirred at roomtemperature overnight before it was quenched by the addition of water.The solid separated was filtered, washed with water and dried to afford456 (0.2, 86% yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) 6 ppm 1.18(t, 3H) 1.74 (brs, 4H) 2.88-2.90 (m, 2H) 3.01-3.04 (m, 2H) 3.66 (s, 2H)3.78 (s, 4H) 4.05-4.12 (q, 2H) 7.19-7.36 (m, 9H) 7.55-7.58 (m, 1H)8.18-8.21 (d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

To a solution of 456 (0.205 g, 0.358 mmol) in Dioxane/Water (20 mL/6 mL)was added lithium hydroxide monohydrate (0.06 g, 1.42 mmol). Theresulting mixture was stirred at room temperature for 3 hr before it wasacidified with acetic acid. The solution was concentrated under reducedpressure and the residue obtained was diluted with water. The solidseparated was filtered, washed with water and dried at high vacuumovernight. The residue obtained was purified by silica gelchromatography eluting with MeOH/dichloromethane to afford 465 (0.15 g,77% yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H)2.90 (brs, 2H) 3.01 (brs, 2H) 3.5 (s, 2H) 3.78 (s, 4H) 7.19-7.36 (m, 9H)7.55-7.58 (m, 1H) 8.18-8.21 (d, 1H) 11.26 (s, 1H) 12.32 (brs, 1H) 12.65(s, 1H).

To a suspension of carboxylic acid 465 (25 mg, 0.046 mmol) in DMF (1 mL)was added HATU (19.2 mg, 0.05 mmol) and stirred till reaction mixture isclear followed by the addition of an N,N-dimethylamine (2M/THF, 30 uL,0.05 mmol) and DIPEA (16 uL, 0.092 mmol). The resulting mixture wasstirred at room temperature for 3 hr before it was quenched by theaddition of water. The solid separated was filtered, washed with waterand dried to afford 472 (19 mg, 73% yield). ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.83-2.90 (brs, 6H) 3.01(brs, 4H) 3.68 (s, 2H) 3.78 (s, 4H) 7.14-7.36 (m, 9H) 7.55-7.58 (d, 1H)8.18-8.21 (d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

To a solution of 1049 (1 g, 6 mmol) in DMF (20 mL) was added potassiumcarbonate (1.662 g, 12 mmol) and (2.16 g, 9 mmol). The resulting mixturewas stirred at 70° C. overnight before it was diluted with water (˜100mL). The resulting solution was partitioned between water and ethylacetate. The organic extract was washed with more water, separated,dried over sodium sulfate, filtered and evaporated. The residue obtainedwas purified by silica gel chromatography eluting with EtOAc/Hexane toafford 1065 (1.78 g, 91% yield) as an oil. ¹H NMR (300 MHz,Chloroform-d) δ ppm 0.13 (s, 6H) 0.95 (s, 9H) 3.63 (s, 2H) 3.73 (s, 2H)3.99-4.06 (m, 4H) 6.87 (m, 3H) 7.3 (m, 1H).

To a solution of 1065 (1.78 g, 5.5 mmol) in THF/MeOH/Water (30 mL, 3 mL,3 mL) was added lithium hydroxide monohydrate (0.46 g, 10.9 mmol). Theresulting mixture was stirred at room temperature overnight before itwas concentrated under reduced pressure. The residue obtained wasdiluted with water (˜20 mL) and the resulting solution was acidifiedwith 6N hydrochloric acid. The solution was partitioned between waterand ethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated. Theresidue obtained was purified by silica gel chromatography eluting withEtOAc/Hexane to afford 1065 and 1066. ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 3.54 (s, 2H) 3.72 (brs, 2H) 3.96-3.98 (brs,2H) 4.85 (brs, 1H) 6.82-6.85 (m, 3H) 7.0-7.22 (m, 1H) 12.3 (brs, 1H).

To a suspension of carboxylic acid 1065 (27 mg, 0.137 mmol) in DMF (2mL) was added HATU (52.2 mg, 0.137 mmol) and stirred till reactionmixture is clear followed by the addition of an amine 1024 (46 mg, 0.125mmol) and DIPEA (44 ul, 0.25 mmol). The resulting mixture was stirred atroom temperature overnight before it was quenched by the addition ofwater. The solid separated was filtered, washed with water and dried.The solid obtained was purified by prep HPLC to afford 427 (16 mg, 23%yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.75 (brs, 4H) 2.90(brs, 2H) 3.02 (brs, 2H) 3.71-3.78 (m, 6H) 3.98-3.99 (brs, 2H) 4.84-4.87(brs, 1H) 6.83-6.92 (m, 3H) 7.21-7.36 (m, 6H) 7.54-7.58 (d, 1H) 8.2-8.23(d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

To a solution of 1049 (1 g, 6 mmol) in acetone (50 mL) was added cesiumcarbonate (2.545 g, 7.83 mmol), 2-bromoethyl methyl ether (0.92 g, 6.62mmol) and sodium iodide (10 mg). The resulting mixture was stirred at50° C. overnight before it was filtered. The filtrate was evaporated andthe residue obtained was purified by silica gel chromatography elutingwith EtOAc/Hexane to afford 1075 (0.97 g, 72% yield) as oil. ¹H NMR (300MHz, Chloroform-d) δ ppm 3.48 (s, 3H) 3.63 (s, 2H) 3.72 (brs, 2H)4.14-4.15 (t, 2H) 6.86-6.9 (m, 3H) 7.26-7.29 (m, 1H).

The remainder of the preparation for compound 428 followed the procedureabove for compound 427. 428: ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δppm 1.75 (brs, 4H) 2.90 (brs, 2H) 3.02 (brs, 2H) 3.32 (s, 3H) 3.66 (brs,2H) 3.78 (brs, 4H) 4.08 (brs, 2H) 6.88-6.92 (m, 3H) 7.25-7.27 (m, 6H)7.54-7.58 (d, 1H) 8.2-8.23 (d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

To an ice cold solution of 1068 (6 g, 30.9 mmoL) in ethanol (50 mL) wasadded thionyl chloride (2 mL) and the resulting reaction mixture wasstirred at room temperature overnight before it was concentrated underthe reduced pressure. The residue obtained was partitioned between waterand ethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated to afford1063 (6 gm).

To a stirred solution of 1063 (3.35 g, 13.4 mmol) in THF (50 mL) wasadded CDI (2.44 g, 15 mmol) and the resulting mixture was stirred for 2hr followed by the addition of water (13 mL). The reaction mixture wascooled to 0° C. and sodium borohydride (2.87 g, 76 mmol) was addedportionwise. The stirring was continued at room temperature for 3 hrbefore it was diluted with ethyl acetate and acidifed with 6N HCl. Theorganic layer was separated, dried over sodium sulfate, filtered andevaporated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1069 (0.563 g, 20%yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δ ppm 1.27-1.31 (q, 3H)2.87-2.92 (d, 2H) 3.63 (s, 2H) 3.87-3.92 (t, 2H) 4.18-4.2 (q, 2H)7.19-7.31 (m, 4H).

To an ice cold solution of 1069 (0.563 g, 2.7 mmol) in dichloromethane(40 mL) and triethylamine (0.47 mL, 3.3 mmol) was added methanesulfonylchloride (0.23 mL, 3.3 mmol) and the resulting mixture wasstirred at 0° C. for 2 hr and at room temperature for 1 hr before it wasdiluted with saturated aqueous sodium bicarbonate solution. The solutionwas extracted with ethyl acetate. The organic extract was washed withmore water, separated, dried over sodium sulfate, filtered andevaporated to afford 1070 (0.78 g, 100% yield). ¹H NMR (300 MHz,Chloroform-d) δ ppm 1.27-1.31 (q, 3H) 2.87 (s, 3H) 3.08 (t, 2H) 3.63 (s,2H) 4.18-4.2 (t, 2H) 4.45 (q, 2H) 7.19-7.31 (m, 4H).

To a solution of 1070 (0.787 g, 2.7 mmol) in DMF (6 mL) was added sodiumazide (0.358 g, 5.5 mmol) and the resulting reaction mixture was stirredat 60° C. for 3 hr before it was partitioned between water and ethylacetate. The organic extract was washed with more water, separated,dried over sodium sulfate, filtered and evaporated. The residue obtainedwas purified by silica gel chromatography eluting with EtOAc/Hexane toafford 1071 (0.5 g, 78% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d)δ ppm 1.27-1.31 (q, 3H) 2.92 (t, 2H) 3.54 (t, 2H) 3.63 (s, 2H) 4.18-4.2(q, 2H) 7.19-7.29 (m, 4H).

To a solution of 1071 (0.5 g, 2.1 mmol) in THF (25 mL) was addedtriphenylphosphine (0.787 g, 3 mmol) and the reaction mixture wasstirred at room temperature under argon for overnight before it wasdiluted with 1 mL of water. The reaction was continued at 50° C. for 1hr before it was concentrated under the reduced pressure. The residuewas partitioned between saturated sodium bicarbonate solution anddichloromethane. The organic layer was separated, dried over sodiumsulfate, filtered and evaporated. The residue obtained was purified bysilica gel chromatography eluting with MeOH/dichloromethane to afford1072 (0.43 g, 100% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δppm 1.27-1.31 (q, 3H) 2.75-2.79 (t, 2H) 2.98-3.02 (t, 2H) 3.63 (s, 2H)4.18-4.2 (q, 2H) 7.13-7.29 (m, 4H).

To a solution of 1072 (0.427 g, 2 mmol) in dichloromethane (30 mL) wasadded di-tert-butyl dicarbonate (0.447 g, 2 mmol) and the reactionmixture was stirred at room temperature for 5 hr before it was purifiedby silica gel chromatography eluting with EtOAc/Hexane to afford 1073(0.577 g, 91% yield) as an oil. ¹H NMR (300 MHz, Chloroform-d) δ ppm1.27-1.31 (q, 3H) 1.59 (s, 9H) 2.82 (t, 2H) 3.4 (m, 2H) 3.63 (s, 2H)4.18 (q, 2H) 7.13-7.29 (m, 4H).

To a solution of 1073 (0.577 g, 1.8 mmol) in Dioxane/Water (10 mL/3 mL)was added lithium hydroxide monohydrate (0.158 g, 3.6 mmol). Theresulting mixture was stirred at room temperature overnight before itwas concentrated under reduced pressure. The residue obtained wasdiluted with water (˜20 mL) and the resulting solution was acidifiedwith 1N hydrochloric acid. The solution was partitioned between waterand ethyl acetate. The organic extract was washed with more water,separated, dried over sodium sulfate, filtered and evaporated to afford1074 (0.35 g, 67% yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm 2.82 (m,2H) 3.4 (m, 2H) 3.63 (s, 2H) 4.6 (brs, 1H) 7.13-7.29 (m, 4H).

To a suspension of carboxylic acid 1074 (43.8 mg, 0.157 mmol) in DMF (2mL) was added HATU (61.3 mg, 0.161 mmol) and stirred till reactionmixture is clear followed by the addition of an amine 1024 (52.5 mg,0.142 mmol) and DIPEA (50 ul, 0.287 mmol). The resulting mixture wasstirred at room temperature overnight before it was quenched by theaddition of water. The solid separated was filtered, washed with waterand dried to afford 429 (60 mg, 67% yield). ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.37-1.38 (s, 9H) 1.74 (brs, 4H) 2.69-2.71(m, 2H) 2.87-2.88 (m, 2H) 2.9-3.15 (m, 4H) 3.78 (s, 4H) 7.09 (brs, 1H)7.12-7.36 (m, 9H) 7.54-7.57 (d, 1H) 8.18-8.21 (d, 1H) 11.26 (s, 1H)12.65 (brs, 1H).

To a suspension of 429 (50 mg, 79.5 mmol) in dichloromethane (5 mL) wasadded TFA (1 mL) and the reaction mixture was stirred at roomtemperature for overnight before it was concentrated under the reducedpressure. The residue obtained was triturated with ether. The solidseparated was filtered, washed with ether and dried at high vacuumovernight to afford 441 (45 mg, 88% yield) as a TFA salt. ¹H NMR (300MHz, Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.86-3.02 (m, 8H)3.78-3.80 (s, 4H) 7.12-7.36 (m, 8H) 7.58 (d, 1H) 7.78 (brs, 3H)8.18-8.21 (d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

To an ice cold solution of 441 (23 mg, 0.035 mmol) in DMF (1 mL) wasadded triethylamine (11 uL, 0.079 mmol) and acetyl chloride (2.8 uL,0.038 mmol). The resulting mixture was stirred at room temperature for 2hr before it was diluted with water. The solid separated was filtered,washed with water and dried at high vacuum overnight to afford 454 (10mg, 50% yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.75-1.79(m, 7H) 2.67-2.70 (m, 2H) 2.9 (brs, 2H) 3.00-3.02 (m, 2H) 3.21-3.26 (m,2H) 3.78 (s, 4H) 7.12-7.36 (m, 9H) 7.58 (d, 1H) 7.9 (brs, 1H) 8.18-8.21(d, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

Compound 409 was prepared via TFA deprotection of compound 399 accordingto the procedure above for the preparation of compound 441. ¹H NMR (300MHz, Dimethylsulfoxide-d6) δ ppm 1.75 (brs, 4H) 2.90 (brs, 2H) 3.02(brs, 2H) 3.78 (brs, 4H) 6.89-6.98 (m, 4H) 7.25-7.36 (m, 7H) 7.51-7.58(d, 1H) 8.2-8.23 (d, 1H) 9.34 (s, 1H) 11.26 (s, 1H) 12.65 (brs, 1H).

Compound 457 was prepared by acylation of 409 according to the amidecoupling procedure above for the preparation of compound 39. ¹H NMR (300MHz, Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.32 (s, 6H) 2.89 (m,2H) 3.02 (m, 2H) 3.13 (s, 2H) 3.78 (s, 4H) 7.01-7.04 (m, 1H) 7.25-7.38(m, 6H) 7.54-7.58 (m, 3H) 8.18-8.21 (d, 1H) 9.77 (s, 1H) 11.26 (s, 1H)12.65 (brs, 1H)

To a suspension of 295 (30 mg, 0.0617 mmol) in MeOH (2 ml) at 0° C. wasadded 2N NaOH (2 ml) solution. The resulting mixture was stirred at roomtemperature overnight. The solvent was evaporated under vacuo and themixture was acidified with 1N HCl to pH 6. The white precipitate wascollected by suction filtration, rinsed with more water and dried toafford 348. ¹H NMR (300 MHz, DMSO-d₆) δ 7.32-7.24 (m, 5H), 7.15-7.12 (d,J=9.57 Hz, 1H), 6.72-6.69 (d, J=9.15 Hz, 1H), 6.09 (s, 2H), 3.77 (s,2H), 2.99-2.96 (bs, 2H), 2.76-2.70 (bs, 2H), 1.70 (bs, 4H).

366: ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 11.26 (s, 1H), 8.22-8.19(d, J=8.82 Hz, 1H), 7.58-7.54 (d, J=9.32 Hz, 1H), 7.33-7.25 (m, 6H),6.95-6.82 (m, 3H), 3.81 (s. 3H), 3.75 (s, 4H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H).

367: A flask was charged with 348 (100 mg, 0.27 mmol),Boc-3-aminomethyl-phenylacetic acid (86 mg, 0.325 mmol) in DMF (2 ml) at0° C. was added HOBT (88 mg, 0.65 mmol) followed by EDCI (156 mg, 0.812mmol). The resulting mixture was stirred at 0° C. for 5 minutes thenwarmed up to room temperature overnight before it was quenched byaddition of water (˜10 mL) at 0° C. The white precipitate was collectedby suction filtration, rinsed with more water. The crude material waspurified by silica gel chromatography eluting with 0-6% MeOH in CH₂Cl₂to afford 367.

Compound 368 was prepared via the deprotection of compound 367 accordingto the procedure above for compound 341. ¹H NMR (300 MHz, DMSO-d₆) δ12.65 (s, 1H), 11.26 (s, 1H), 8.22-8.16 (m, 3H), 7.58-7.54 (d, J=9.27Hz, 1H), 7.40-7.28 (m, 9H), 4.04 (s, 2H), 3.81 (s. 4H), 3.01 (bs, 2H),2.90 (bs, 2H), 1.73 (bs, 4H).

Compound 383 was prepared from compound 348 according to the procedureabove for the preparation of compound 354. ¹H NMR (300 MHz, DMSO-d₆) δ12.65 (s, 1H), 11.26 (s, 1H), 8.51 (s, 1H), 8.22-8.19 (d, J=9.09 Hz,1H), 7.81-7.76 (m, 1H), 7.58-7.54 (d, J=9.12 Hz, 1H), 7.42-7.26 (m, 7H),4.0 (s, 2H), 3.81 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

To a solution of 348 (56.5 mg, 0.153 mmol) in DMF (1 ml) at 0° C. wasadded triethylamine (43 ul, 0.306 mmol) drop wise followed by benzylisocyanate (23 ul, 0.184 mmol) drop wise. The resulting mixture wasslowly warmed up to room temperature and stirred for 6 h before it wasquenched by addition of water (˜5 mL) at 0° C. The white precipitate wascollected by suction filtration, rinsed with more water and ether anddichloromethane then dried to afford 405. ¹H NMR (300 MHz, DMSO-d₆) δ12.65 (s, 1H), 9.57 (s, 1H), 8.25 (bs, 1H), 7.74-7.71 (d, J=8.61 Hz,1H), 7.50-7.47 (d, J=9.42 Hz, 1H), 7.34-7.27 (m, 10H), 4.42-4.40 (d,J=5.46 Hz, 2H), 3.80 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs,4H).

To a suspension of 339 (1 g, 1.62 mmol) in MeOH (10 ml) at 0° C. wasadded 2N NaOH (10 ml) solution. The resulting mixture was stirred atroom temperature overnight. The solvent was evaporated under vacuo andthe mixture was acidified with 6N HCl to pH 6 at 0° C. The mixture wastriturated with EtOAc and the white precipitate was collected by suctionfiltration, rinsed with more EtOAc and dried to afford 412. ¹H NMR (300MHz, DMSO-d₆) δ 12.66 (s, 1H), 7.29-7.22 (m, 2H), 7.19-7.13 (m, 4H),6.72 (d, J=8.86 Hz, 1H), 6.12 (bs, 2H), 4.12 (d, J=6.09 Hz, 2H), 3.79(s, 2H), 3.01 (m, 2H), 2.71 (m, 2H), 1.70 (bs, 4H), 1.39 (s, 9H).

To a solution of 412 (60 mg, 0.121 mmol) in DMF (1 ml) at 0° C. wasadded triethylamine (34 ul, 0.242 mmol) drop wise followed by ethylisocyanate (11 ul, 0.145 mmol) drop wise. The resulting mixture wasslowly warmed up to room temperature and stirred for 6 h before it wasquenched by addition of water (˜5 mL) at 0° C. The white precipitate wascollected by suction filtration. The crude material was purified bysilica gel chromatography eluting with 0-6% MeOH in CH₂Cl₂ to afford420. ¹H NMR (300 MHz, DMSO-d₆) 12.65 (s, 1H), 11.27 (s, 1H), 9.42 (s,1H), 8.22-8.19 (d, J=8.61 Hz, 1H), 7.77-7.13 (m, 5H), 6.56-6.53 (bs,1H), 4.12-4.11 (d, 2H), 3.78 (s, 2H), 3.23-3.16 (m, 2H), 3.01 (bs, 2H),2.90 (bs, 2H), 1.73 (bs, 4H), 1.38 (s, 9H), 1.10-1.07 (t, 3H).

422: ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H), 10.74 (s, 1H), 8.18-8.15(d, J=9.51 Hz, 1H), 7.61-7.12 (m, 9H), 6.62 (s, 1H), 5.33 (s, 1H),4.13-4.11 (d, J=5.58 Hz, 2H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H), 1.38 (s, 9H).

To a solution of 412 (40 mg, 0.0804 mmol) in DMF (1 ml) at 0° C. wasadded triethylamine (17 ul, 0.121 mmol) drop wise followed by aceticanhydride (8 ul, 0.0844 mmol) drop wise. The resulting mixture wasslowly warmed up to room temperature and stirred overnight before it wasquenched by addition of water (˜5 mL) at 0° C. The mixture waspartitioned between water and EtOAc. The organic extract was washed withwater, dried over sodium sulfate, filtered and evaporated. The crudematerial was purified by silica gel chromatography eluting with 0-6%MeOH in CH₂Cl₂ to afford 424. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (s, 1H),11.01 (s, 1H), 8.23-8.20 (d, J=8.61 Hz, 1H), 7.57-7.55 (d, J=8.16 Hz,1H), 7.38-7.12 (m, 4H), 4.13-4.11 (d, J=5.76 Hz, 2H), 3.78 (s, 2H), 3.01(bs, 2H), 2.90 (bs, 2H), 2.14 (s, 3H), 1.75 (bs, 4H), 1.39 (s, 9H).

To a suspension of 424 (10 mg, 0.018 mmol) in dichloromethane (1 ml) wasadded TFA (1 ml) at 0° C. The resulting mixture was stirred at roomtemperature for 1 h before it was evaporated under vacuo to dryness.Ether was added and the white precipitate was collected by suctionfiltration, rinsed with more ether and dried to afford 425. ¹H NMR (300MHz, DMSO-d₆) δ 12.70 (s, 1H), 11.0 (s, 1H), 8.22-8.19 (d, J=8.82 Hz,1H), 8.16-8.08 (bs, 2H), 7.58-7.54 (d, J=9.42 Hz, 1H), 7.39-7.30 (m,4H), 4.06-4.03 (m, 2H), 3.84 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 2.14(s, 3H), 1.75 (bs, 4H).

To a solution of 1076 (1.8 g, 10 mmmol) in ethanol/water (40 mL/20 mL)was added sodium cyanide (0.98 g, 20 mmol). The resulting mixture wasstirred at 90° C. for 4 hr before it was cooled to 0° C. Solid separatedwas filtered, washed with water and dried at high vacuum overnight toafford 1077 (1.5 g, 85% yield).

To an ice cold solution of 1077 (1 g, 5.68 mmmol) in ethanol (50 mL) wasadded sodium borohydride (0.86 g, 22.72 mmol) followed by the additionof bismuth chloride (2 g, 6.248 mmol) portionwise. The resulting mixturewas stirred at room temperature for 3 hr before it was filtered throughthe celite pad. Filtrate was concentrated and the residue obtained waspartitioned between aq sodium bicarbonate solution and ethyl acetate.The organic extract was separated, dried over sodium sulfate, filteredand evaporated to afford 1078 (0.82 g, 100% yield). ¹H NMR (300 MHz,Chloroform-d) δ ppm 2.17 (s, 3H) 3.69-3.71 (brs, 4H) 6.71-6.74 (d, 1H)6.80-6.83 (d, 1H) 7.04-7.09 (m, 1H).

To a solution of 1078 (0.3 g, 2 mmmol) in toluene (10 mL) was addedpotassium acetate (0.2 g, 2.04 mmol) and acetic anhydride (0.55 mL, 5.83mmol). The resulting mixture was stirred at 80° C. for 1 hr followed bythe addition of isoamyl nitrite (0.4 mL, 3 mmol). Stirring was continuedat 80° C. overnight before it was cooled to room temperature. Thesolution was partitioned between water and ethyl acetate. The organicextract was washed with more water, separated, dried over sodiumsulfate, filtered and evaporated. The residue obtained was purified bysilica gel chromatography eluting with EtOAc/Hexane to afford 1079 (0.22g, 54% yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm 2.85 (s, 3H) 4.09(s, 2H) 7.39-7.41 (d, 1H) 7.58-7.63 (m, 1H) 8.28 (s, 1H) 8.48-8.51 (d,1H)

To a solution of 1079 (0.44 g, 2.21 mmmol) in ethanol (5 mL) was added20% aqueous sodium hydroxide (5 mL). The resulting mixture was stirredat 90° overnight before it was concentrated. The residue obtained wasdiluted with water, acidified with acetic acid and extracted with ethylacetate. The organic extract was separated, dried over sodium sulfate,filtered and evaporated to afford 1080 (0.1 g, 51% yield). ¹H NMR (300MHz, Dimethylsulfoxide-d6) δ ppm 3.89 (s, 2H) 6.98-7.0 (d, 1H) 7.27-7.32(m, 1H) 7.43-7.46 (d, 1H) 8.10 (s, 1H) 12.3-13.2 (broad doublet, 2H)

To a suspension of carboxylic acid 1080 (60 mg, 0.34 mmol) in DMF (2 mL)was added HATU (130 mg, 0.34 mmol) and stirred till reaction mixture isclear followed by the addition of an amine 1024 (114 mg, 0.31 mmol) andDIPEA (108 uL, 0.62 mmol). The resulting mixture was stirred at roomtemperature for 3 hr before it was quenched by the addition of water.The solid separated was filtered, washed with water and dried. Theresidue obtained was purified by silica gel chromatography eluting withMeOH/dichloromethane to afford 512 (14 mg, 9% yield). ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.89 (brs, 2H) 2.91 (brs, 2H)3.78 (s, 2H) 4.13 (s, 2H) 7.05-7.08 (m, 1H) 7.27-7.57 (m, 8H) 8.19 (d,2H) 11.26 (s, 1H) 12.76-12.80 (brs, 1H) 13.11 (s, 1H).

Compound 389 was prepared according to the procedure above for thepreparation of compound 334. ¹H NMR (300 MHz, DMSO-d₆) δ 12.95 (s, 1H),11.26 (s, 1H), 8.22-8.19 (d, J=8.91 Hz, 1H), 7.61-7.26 (m, 10H), 6.17(s, 1H), 3.78 (s, 2H), 3.54 (bs, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H),2.67-2.62 (m, 4H), 2.38 (bs, 4H), 1.73 (bs, 4H).

Compound 404 was prepared according to the procedure above for thepreparation of compound 334. ¹H NMR (300 MHz, DMSO-d₆) δ 12.95 (s, 1H),11.26 (s, 1H), 8.22-8.19 (d, J=9.60 Hz, 1H), 7.58-7.54 (d, J=9.03 Hz,1H), 7.39-7.26 (m, 6H), 7.12 (s, 2H), 7.01-6.98 (m, 1H), 6.10 (s, 1H),3.78 (s, 5H), 3.54 (bs, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H), 2.64 (bs,4H), 2.38 (bs, 4H), 1.74 (bs, 4H).

To a flask was added K₂CO₃ (0.28 g, 2.06 mmol), compound 295 (0.5 g,1.03 mmol) followed by 25 mL of DMF. The mixture was stirred for 15minutes and chloromethyl butyrate (0.17 g, 1.23 mmol) was added and thereaction placed under an atmosphere of argon. The mixture was heated to80° C. for 1.5 hours, allowed to cool to room temperature and pouredinto 200 ml water. The mixture was transferred to a separatory funnel,extracted with EtOAc (3×100 mL), the organic layers separated and washedwith water (3×50 mL), brine (2×50 ml) and dried over Na₂SO₄. The Na₂SO₄was removed by filtration and the volatiles removed under reducedpressure. The crude material was purified by reverse-phasechromatography giving 0.15 g of compound 402.

To a solution of 318 (100 mg, 0.19 mmol) in CH₂Cl₂ (5 mL) at 0° C. wasadded pyridine (300 μL) and followed by addition of a solution ofbutyryl chloride (43 mL, 0.41 mmol) in CH₂Cl₂ (5 mL) dropwise. Theresulting mixture was stirred at 0° C. for 1 h before it was partitionedbetween EtOAc and H₂O. The organic layer was separated, dried (MgSO₄)and concentrated. The residue was purified by flash columnchromatography over silica gel eluting with 1-10% MeOH in CH₂Cl₂ toprovide the desired product 439 (117 mg). ¹H NMR (300 MHz, CDCl₃) δ13.01 (bs, 1H), 10.12 (s, 1H), 8.49 (d, J=9.64 Hz, 1H), 7.77 (s, 1H),7.57 (d, J=7.11 Hz, 1H), 7.40-7.30 (m, 8H), 6.57 (s, 1H), 3.97 (s, 2H),3.09 (bs, 2H), 3.00 (bs, 2H), 2.48 (m, 2H), 1.91 (bs, 4H), 1.85-1.62 (m,2H), 0.98 (t, J=7.07 Hz, 3H).

To a solution of sodium thiomethoxide (0.266 g, 3.8 mmol) in DMF (10 mL)was added a solution of 1016 (0.657 g, 2.7 mmol) in DMF and theresulting mixture was stirred at room temperature for overnight. Thesolution was partitioned between water and ethyl acetate. The organicextract was washed with more water, separated, dried over sodiumsulfate, filtered and evaporated. The residue obtained was purified bysilica gel chromatography eluting with EtOAc/Hexane to afford 1085 (0.41g, 72% yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm 2.03-2.04 (s, 3H)3.66-3.73 (m, 7H) 7.21-7.32 (m, 4H).

To a solution of 1085 (0.503 g, 2.39 mmol) in dichloromethane was addedMCPBA (1.338 g, 7.78 mmol) and the resulting mixture was stirred at roomtemperature for 4 hr before it was diluted with aq. Sodium thiosulfatesolution. Organic layer was separated, washed with saturated aq. Sodiumbicarbonate solution and water, dried over sodium sulfate, filtered andconcentrated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1086 (0.5 g, 86%yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm 2.8 (s, 3H) 3.7-3.74 (m,5H) 4.27 (s, 2H) 7.30-7.4 (m, 4H).

To an ice cold solution of 1086 (0.5 g, 2.06 mmol) in dioxane (10 mL)and water (10 mL) was added lithium hydroxide monohydrate (0.26 g, 6.19mmol) and the resulting reaction mixture was stirred at room temperaturefor overnight before it was concentrated. The residue obtained wasdiluted with water and was acidified with acetic acid. The resultingsolution was partitioned between water and ethyl acetate. The organicextract was washed with more water, separated, dried over sodiumsulfate, filtered and evaporated. The residue obtained was trituratedwith ether. The solid separated was filtered, washed with ether anddried at high vacuum overnight to afford 1087 (0.3 g, 64% yield). ¹H NMR(300 MHz, Dimethylsulfoxide-d6) δ ppm 2.92 (s, 3H) 3.61 (s, 2H) 4.48 (s,2H) 7.31-7.35 (m, 4H) 12.37 (s, 1H).

Compound 634 was prepared using procedures analogous to those above. ¹HNMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.91 (brs, 5H)3.03 (brs, 2H) 3.78 (s, 2H) 3.85 (s, 2H) 4.49 (s, 2H) 7.32-7.40 (m, 9H)7.55-7.58 (d, 1H) 8.19 (d, 1H) 11.26 (s, 1H) 12.69 (s, 1H).

Compound 635 was prepared using procedures analogous to those above. ¹HNMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.75 (brs, 4H) 2.91 (brs, 5H)3.03 (brs, 2H) 3.82 (s, 4H) 4.49 (s, 2H) 7.32-7.40 (m, 9H) 7.55-7.58 (d,1H) 8.19 (d, 1H) 11.26 (s, 1H) 12.69 (s, 1H).

To a solution of 1,3-bromo chloropropane (1.57 g, 10 mmol) in DMF (10mL) was added sodium thiomethoxide (0.63 g, 9 mmol) and the resultingreaction mixture was stirred at room temperature overnight and at 70° C.for another day. The solution was partitioned between water and ethylacetate. The organic extract was washed with more water, separated,dried over sodium sulfate, filtered and evaporated to afford 1088 (1.3gm) which is used for the next step without purification.

To a solution of 1088 (1.3 g, 7.7 mmol) in dichloromethane (100 mL) wasadded MCPBA (5.15 g, 23.34 mmol) and the resulting mixture was stirredat room temperature for overnight before it was diluted with aq. Sodiumthiosulfate solution. Organic layer was separated, washed with saturatedaq. Sodium bicarbonate solution and water, dried over sodium sulfate,filtered and concentrated. The residue obtained was purified by silicagel chromatography eluting with EtOAc/Hexane to afford 1089 (0.3 gm). ¹HNMR (300 MHz, Chloroform-d) δ ppm 2.38-2.49 (m, 2H) 2.99 (s, 3H)3.22-3.27 (m, 2H) 3.57-3.77 (m, 2H).

To a solution of 1092 (0.525 g, 3.16 mmol) in DMF (15 mL) was addedpotassium carbonate (0.873 g, 6.32 mmol), 1089 (0.74 g, 4.74 mmol) andsodium iodide (10 mg). The resulting mixture was stirred at 70° C.overnight before it was diluted with water (˜100 mL). The resultingsolution was partitioned between water and ethyl acetate. The organicextract was washed with more water, separated, dried over sodiumsulfate, filtered and evaporated. The residue obtained was purified bysilica gel chromatography eluting with EtOAc/Hexane to afford 1090 (0.53g, 59% yield). ¹H NMR (300 MHz, Chloroform-d) δ ppm 2.35-2.40 (m, 2H)2.99 (s, 3H) 3.26-3.31 (m, 2H) 3.63 (s, 2H) 3.73 (s, 3H) 4.16 (t, 2H)6.81-6.93 (m, 3H) 7.25 (m, 1H).

To a solution of 1090 (0.53 g, 1.85 mmol) in dioxane (8 mL) and water (4mL) was added lithium hydroxide monohydrate (0.156 g, 3.71 mmol) and theresulting reaction mixture was stirred at room temperature for 5 hrbefore it was acidified with acetic acid. The resulting solution waspartitioned between water and ethyl acetate. The organic extract waswashed with more water, separated, dried over sodium sulfate, filteredand evaporated. The residue obtained was triturated with ether. Thesolid separated was filtered, washed with ether and dried at high vacuumovernight to afford 1091 (0.2 g, 40% yield). ¹H NMR (300 MHz,Chloroform-d) δ ppm 2.32-2.42 (m, 2H) 2.99 (s, 3H) 3.26-3.31 (m, 2H)3.66 (s, 2H) 4.12-4.16 (t, 2H) 6.83-6.94 (m, 3H) 7.26-7.31 (m, 1H).

Compound 583 was prepared by coupling of 1091 with 1024 using proceduredescribed for Amide Coupling General Procedure. ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.15-2.19 (m, 2H) 2.90-3.03(m, 7H) 3.27-3.39 (m, 2H) 3.78 (s, 4H) 4.07-4.11 (t, 2H) 6.90-6.93 (m,3H) 7.24-7.37 (m, 6H) 7.55-7.58 (d, 1H) 8.19 (d, 1H) 11.26 (s, 1H) 12.69(s, 1H).

Compound 623 was prepared by coupling of 11 with 348 using proceduredescribed for Amide Coupling General Procedure. ¹H NMR (300 MHz,Dimethylsulfoxide-d6) δ ppm 1.74 (brs, 4H) 2.15-2.19 (m, 2H) 2.90-3.03(m, 7H) 3.27-3.39 (m, 2H) 3.75-3.78 (m, 4H) 4.07-4.11 (t, 2H) 6.90-6.97(m, 3H) 7.26-7.34 (m, 6H) 7.58 (d, 1H) 8.19 (d, 1H) 11.26 (s, 1H) 12.69(s, 1H).

To a solution of 3-hydroxyphenylacetic acid (1 g, 0.00657 mol) in MeOH(10 ml) at 0° C. was added (Trimethylsilyl) diazomethane solution (2 Min hexanes, 20 ml) dropwise. The resulting mixture was stirred at roomtemperature for 30 minutes before it was evaporated to dryness. Thecrude material was purified by silica gel chromatography eluting with0-25% EtOAc in Hexanes to afford 1093.

1094 was made using procedure described for compound 1119.

1095 was made using procedure described for compound 1102.

646 was made using procedure described for compound 666. ¹H NMR (300MHz, CDCl₃) δ 10.32 (s, 1H), 8.50-8.47 (d, J=8.52 Hz, 1H), 7.90-7.70 (m,1H), 7.40-7.36 (m, 6H), 7.03-6.86 (m, 3H), 4.72 (s, 2H), 4.02 (s, 2H),3.90 (s, 2H), 3.44-3.39 (m, 4H), 3.09-2.96 (d, 4H), 1.87 (bs, 4H),1.24-1.16 (m, 6H).

647 was made using procedure described for compound 666. ¹H NMR (300MHz, DMSO-d₆) δ 12.61 (s, 1H), 11.22 (s, 1H), 8.22-8.19 (d, J=9.18 Hz,1H), 8.02-8.10 (t, 1H), 7.58-7.55 (d, J=9.12 Hz, 1H), 7.36-7.24 (m, 5H),6.99-6.84 (m, 3H), 4.48 (s, 2H), 3.82 (s, 2H), 3.75 (s, 2H), 3.50 (s,2H), 3.01-2.90 (m, 5H), 1.73 (bs, 4H), 0.82-0.80 (d, J=6.69 Hz, 6H).

A solution of hydroxylamine (50% in water, 7.4 mL) was added toacetonitrile (60 mL) and the mixture heated to 90° C. for 16 hours. Themixture was cooled to room temperature then cooled in a wet-ice bathgiving a precipitate. The solids were collected by filtration and rinsedwith cold acetonitrile (10 mL) and dried under high vacuum giving 4.47 gof N′-hydroxyacetimidamide 1096. See Zemolka, S. et al PCT Int Appl2009118174. ¹H NMR 300 MHz CDCl₃: δ 4.57 (br s, 2H), 1.89 (s, 3H).

A flask was charged with N′-hydroxyacetimidamide 1096 (0.45 g, 6.17mmol) followed by THF (25 mL), NaH (60% in oil, 0.246 g, 6.17 mmol), 4 Amolecular sieves (4.5 g) and the mixture heated to 60° C. under anatmosphere of argon for 1 hour. A solution of ethyl2-(3-bromophenyl)acetate 1097 (1.5 g, 6.17 mmol) in THF (12.5 mL) wasadded to the N′-hydroxyacetimidamide mixture and heated at 60° C. for 16hours. The mixture was diluted with water (100 mL) and extracted withEtOAc (2×25 mL). The organic layers were combined, washed with water (25mL), brine (2×25 mL) and dried over Na₂SO₄. The Na₂SO₄ was removed byfiltration and the volatiles removed under reduced pressure. The crudematerial was purified by normal phase chromatography 0-30% EtOAc/hexanesgiving 0.56 g of 5-(3-bromobenzyl)-3-methyl-1,2,4-oxadiazole 1098. ¹HNMR 300 MHz CDCl₃: δ 7.48-7.42 (m, 2H), 7.26-7.24 (m, 2H), 4.15 (s, 2H),2.38 (s, 3H).

To a solution of 5-(3-bromobenzyl)-3-methyl-1,2,4-oxadiazole 1098 (0.50g, 1.97 mmol) in dioxane (1 mL), under an atmosphere of Argon, was addedBis(tri-t-butylphosphine)palladium(0) (0.15 g, 0.295 mmol) followed bythe addition of 2-tert-butoxy-2-oxoethylzinc chloride (0.5 M in diethylether, 4.92 mmol, 9.84 mL). The mixture was allowed to stir under argonfor 20 hours and the volatiles were removed under reduced pressure. Theresidue was taken up in EtOAc (10 mL) and washed with water (2×5 mL),brine (2×5 mL) and dried over Na₂SO₄. The Na₂SO₄ was removed byfiltration and the volatiles removed under reduced pressure. The crudematerial was purified by normal phase chromatography 0-50% EtOAc/Hexanesto give 0.300 g tert-butyl2-(3-((3-methyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)acetate 1099. ¹H NMR300 MHz CDCl₃: δ 7.40-7.18 (m, 4H), 4.17 (s, 2H), 3.51 (s, 2H), 2.36 (s,3H), 1.43 (s, 9H).

To a mixture of tert-butyl2-(3-((3-methyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)acetate 1099 (0.127g, 0.44 mmol) in dioxane (3 mL) was added 4N HCl in dioxane (1 mL) andstirred under an atmosphere of argon for 2 hours. The volatiles wereremoved under reduced pressure and the residue diluted with water (5 mL)and the pH adjusted to 12 with 2.5 N NaOH. The mixture was washed withdichloromethane (4×2 mL) and the pH adjusted to 6 with 1 N HCl. Themixture was extracted with EtOAc (3×2 mL) and the organic layerscombined, washed with brine and dried over Na₂SO₄. The Na₂SO₄ wasremoved by filtration and the volatiles removed under reduced pressureto give 0.041 g of2-(3-((3-methyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)acetic acid 1100. ¹HNMR 300 MHz CDCl₃: δ 7.40-7.18 (m, 4H), 4.18 (s, 2H), 3.63 (s, 2H), 2.36(s, 3H).

To a solution ofN-(5-(4-(6-aminopyridazin-3-yl)butyl)-1,3,4-thiadiazol-2-yl)-2-phenylacetamide348 (0.061 g, 0.0165 mmol),2-(3-((3-methyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)acetic acid 1100(0.040 g, 0.18 mmol), 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide(0.078 g, 0.41 mmol), 1-hydroxybenzotriazole (0.055 g, 0.41 mmol) in DMF(3 mL) was added DIEA (0.085 g, 0.115 mL, 0.66 mmol) and the mixturestirred for 16 hours. The mixture was diluted with water (20 mL) andextracted with EtOAc (3×20 mL). The organic layers were combined, washedwith water (3×20 mL), brine (2×20 mL) and dried over Na₂SO₄. The Na₂SO₄was removed by filtration and the volatiles removed under reducedpressure. The crude material was purified by normal phase chromatography0-5% MeOH/dichloromethane giving 0.003 g of2-(3-((3-methyl-1,2,4-oxadiazol-5-yl)methyl)phenyl)-N-(6-(4-(5-(2-phenylacetamido)-1,3,4-thiadiazol-2-yl)butyl)pyridazin-3-yl)acetamide648. ¹H NMR 300 MHz CDCl₃: δ 12.59 (s, 1H), 10.53 (s, 1H), 8.45 (d, 1H,J=12.2 Hz), 7.4-7.1 (m, 10H), 4.15 (s, 2H), 4.03 (s, 2H), 3.94 (s, 2H),3.02 (m, 2H), 2.94 (m, 2H), 2.33 (s, 3H), 1.85 (m, 4H).

1101 was made using procedure described for compound 1119.

To a solution of 1101 (470 mg, 1.41 mmol) in MeOH (5 ml) and H₂O (5 ml)at 0° C. was added lithium hydroxide monohydrate (296 mg, 7.05 mmol).The resulting mixture was stirred at room temperature for 3 days beforeit was evaporated to dryness. The mixture was then acidified with 1N HCl(pH 4), and it was partitioned between water and EtOAc. The organicextract was washed with water, dried over sodium sulfate, filtered andevaporated to afford 1102.

608 was made using procedure described for compound 664. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.15 Hz,1H), 7.58-7.54 (d, J=9.27 Hz, 1H), 7.38-7.28 (m, 8H), 4.63 (bs, 4H),3.82 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H),1.48-1.44 (d, J=5.93 Hz, 9H).

612 was made using procedure described for compound 666. ¹H NMR (300MHz, DMSO-d₆) δ 11.32 (s, 1H), 8.22-8.19 (d, J=9.78 Hz, 1H), 7.58-7.54(d, J=9.72 Hz, 1H), 7.48-7.28 (m, 7H), 4.67-4.61 (m, 4H), 3.88 (s, 2H),3.80 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H), 1.48-1.44 (d,J=9.93 Hz, 9H).

649 was made using procedure described for compound 695. ¹H NMR (300MHz, DMSO-d₆) δ 11.36 (s, 1H), 8.20-8.17 (d, J=9.78 Hz, 1H), 7.60-7.57(d, J=8.92 Hz, 1H), 7.52-7.32 (m, 7H), 4.61-4.56 (d, J=16.99 Hz, 4H),3.91 (s, 2H), 3.87 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

650 was made using procedure described for compound 695. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 9.40 (bs, 1H), 8.22-8.19(d, J=9.09 Hz, 1H), 7.58-7.54 (d, J=9.36 Hz, 1H), 7.38-7.28 (m, 8H),4.63 (bs, 4H), 3.82 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H),1.73 (bs, 4H).

To a solution of 650 (30 mg, 0.0468 mmol) in DMF (1 ml) at 0° C. wasadded triethylamine (13 ul, 0.0936 mmol) dropwise followed by aceticanhydride (4.64 ul, 0.0491 mmol) dropwise. The resulting mixture wasstirred at 0° C. for 20 minutes before it was quenched by addition ofice water (˜5 mL). The white precipitate was collected by suctionfiltration, rinsed with more water. The crude material was purified bysilica gel chromatography eluting with 0-6% MeOH in CH₂Cl₂ to afford651. ¹H NMR (300 MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19(d, J=9.27 Hz, 1H), 7.58-7.54 (d, J=9.00 Hz, 1H), 7.38-7.28 (m, 8H),4.88 (bs, 2H), 4.67 (bs, 2H), 3.82 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H),2.90 (bs, 2H), 2.11 (s, 3H), 1.73 (bs, 4H).

To a solution of 2-(3-bromophenyl)acetic acid 1103 (10.0 g, 46.5 mmol)in 100 mL EtOH was added conc. H₂SO₄ (10 drops) and the mixture heatedto reflux temperature for 3 hours. The mixture was allowed to cool toroom temperature and the volatiles were removed under reduced pressure.The residue was taken up in EtOAc (100 mL) and washed with water (2×50mL), saturated NaHCO₃ (1×25 mL), brine (2×25 mL) and dried over Na₂SO₄.The Na₂SO₄ was removed by filtration and the volatiles removed underreduced pressure to give ethyl 2-(3-bromophenyl)acetate 1097 (11.1grams) as a liquid). ¹H NMR 300 MHz CDCl₃: δ 7.41 (m, 2H), 7.20 (m, 2H),4.14 (q, 2H, J=9.5 Hz), 3.57 (s, 2H), 1.25 (t, 3H, J=9.5 Hz).

To a solution of ethyl 2-(3-bromophenyl)acetate 1097 (1.5 g, 6.17 mmol)in MeOH (20 mL) was added hydrazine (0.79 g, 24.7 mmol) and the mixtureheated to reflux temperature for 4 hours. The mixture was allowed tocool to room temperature giving rise to a white precipitate which wascollected by filtration and rinsed with MeOH (10 mL). After drying underreduced pressure 1.4 grams of 2-(3-bromophenyl)acetohydrazide 1104 wasisolated. ¹H NMR 300 MHz CDCl₃: δ 7.42 (s, 2H), 7.20 (s, 2H), 6.73 (brs, 1H), 3.51 (s, 2H), 1.81 (br s, 2H).

To a solution of 2-(3-bromophenyl)acetohydrazide 1104 (1.0 g, 4.37 mmol)in AcOH (10 mL) was added trimethylorthoacetate (2.62 g, 21.83 mmol) andthe mixture heated to 115° C. for 18 hours. The volatiles were removedunder reduced pressure and the residue purified by reverse phasechromatography to give 0.59 g of2-(3-bromobenzyl)-5-methyl-1,3,4-oxadiazole 1105. ¹H NMR 300 MHz CDCl₃:δ 7.45 (m, 2H), 7.23 (m, 2H), 4.12 (s, 2H), 2.49 (s, 3H).

To a solution of 2-(3-bromobenzyl)-5-methyl-1,3,4-oxadiazole 1105 (0.50g, 1.97 mmol) in dioxane (1 mL), under an atmosphere of Argon, was addedBis(tri-t-butylphosphine)palladium(0) (0.15 g, 0.295 mmol) followed bythe addition of 2-tert-butoxy-2-oxoethylzinc chloride (0.5 M in diethylether, 4.92 mmol, 9.84 mL). The mixture was allowed to stir under Argonfor 20 hours and the volatiles were removed under reduced pressure. Theresidue was taken up in EtOAc (10 mL) and washed with water (2×5 mL),brine (2×5 mL) and dried over Na₂SO₄. The Na₂SO₄ was removed byfiltration and the volatiles removed under reduced pressure. The crudematerial was purified by normal phase chromatography 0-50% EtOAc/Hexanesto give 0.338 g of tert-butyl2-(3-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)phenyl)acetate 1106. ¹H NMR300 MHz CDCl₃: δ 7.24 (m, 4H), 4.12 (s, 2H), 3.51 (s, 2H), 2.46 (s, 3H),1.43 (s, 9H).

To a mixture of tert-butyl2-(3-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)phenyl)acetate 1106 (0.127g, 0.44 mmol) in dioxane (3 mL) was added 4N HCl in dioxane (1 mL) andstirred under an atmosphere of Argon for 2 hours. The volatiles wereremoved under reduced pressure and the residue diluted with water (5 mL)and the pH adjusted to 12 with 2.5 N NaOH. The mixture was washed withdichloromethane (4×2 mL) and the pH adjusted to 6 with 1 N HCl. Themixture was extracted with EtOAc (3×2 mL) and the organic layerscombined, washed with brine and dried over Na₂SO₄. The Na₂SO₄ wasremoved by filtration and the volatiles removed under reduced pressureto give 0.023 g of2-(3-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)phenyl)acetic acid 1107.

A solution ofN-(5-(4-(6-aminopyridazin-3-yl)butyl)-1,3,4-thiadiazol-2-yl)-2-phenylacetamide348 (0.035 g, 0.094 mmol),2-(3-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)phenyl)acetic acid 1107(0.023 g, 0.094 mmol), 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide(0.045 g, 0.235 mmol), 1-hydroxybenzotriazole (0.032 g, 0.235 mmol) inDMF (1.75 mL) was stirred for 16 hours and diluted with water (20 mL).The mixture was extracted with EtOAc (3×20 mL) the organic layerscombined, washed with water (3×20 mL), brine (2×20 mL) and dried overNa₂SO₄. The Na₂SO₄ was removed by filtration and the volatiles removedunder reduced pressure. The crude material was purified by reverse phasechromatography giving 0.004 g of2-(3-((5-methyl-1,3,4-oxadiazol-2-yl)methyl)phenyl)-N-(6-(4-(5-(2-phenylacetamido)-1,3,4-thiadiazol-2-yl)butyl)pyridazin-3-yl)acetamide652. ¹H NMR 300 MHz DMSO-d6: δ 12.62 (s, 1H), 11.24 (s, 1H), 8.16 (d,1H, J=12.2 Hz), 7.54 (d, 1H, J=12.2 Hz), 7.3-7.1 (m, 9H), 4.20 (s, 2H),3.78 (s, 2H), 3.74 (s, 2H), 2.99 (m, 2H), 2.87 (m, 2H), 2.41 (s, 3H),1.72 (m, 4H).

A mixture of 3-bromoacetophenone (5 g, 25.1 mmol) in formic acid (6 gm)and formamide (25 mL) was heated to 170° C. for overnight before it wasextracted with toluene. Organic layer was separated and concentrated.The residue obtained was diluted with 3N HCl and the resulting mixturewas refluxed overnight before it was cooled to room temperature. Thesolution was extracted with ether. Aqueous layer was separated, basifiedwith aq. Sodium hydroxide solution and extracted with ether. Organiclayer was separated, dried over sodium sulfate, filtered andconcentrated to afford 1108 (3 g, 60% yield). ¹H NMR (300 MHz,Chloroform-d) δ ppm 1.22-1.25 (d, 3H) 3.97-3.99 (q, 1H) 7.23-7.4 (m, 3H)7.6 (s, 1H).

To a solution of 1108 (2.945 g, 14.7 mmol) in dichloromethane (100 mL)was added boc anhydride (3.21 g, 14.7 mmol) and the reaction mixture wasstirred at room temperature overnight before it was concentrated andpurified by silica gel chromatography eluting with EtOAc/Hexane toafford 1109 (3 g, 68% yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δppm 1.29-1.31 (d, 3H) 1.38 (s, 9H) 4.61-4.63 (q, 1H) 7.3 (brs, 2H)7.41-7.5 (m, 3H).

To a degassed solution of 1109 (0.5 g, 1.66 mmol) andbis(tri-tert-butylphosphine)palladium(0) (0.085 g, 0.166 mmol) indioxane (3 mL) was added 2-tert-Butoxy-2-oxoethylzinc chloride (8.5 mL,4.15 mmol) under Argon and the resulting reaction mixture was stirred atroom temperature for 4 hr before it was quenched with saturated aqueousammonium chloride solution. The resulting solution was partitionedbetween water and ethyl acetate. The organic extract was washed withmore water, separated, dried over sodium sulfate, filtered andevaporated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1110 (0.35 g, 62%yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.29-1.31 (d, 3H)1.388-1.42 (brs, 18H) 3.53 (s, 2H) 4.59-4.63 (q, 1H) 7.09 (brs, 1H)7.12-7.20 (brs, 2H) 7.25-7.27 (m, 1H) 7.27-7.30 (m, 1H).

To a solution of 1110 (0.44 g, 1.3 mmol) in methanol (40 mL) and water(10 mL) was added lithium hydroxide monohydrate (0.4 gm) and theresulting reaction mixture was stirred at room temperature for 2 daysbefore it was concentrated. The residue obtained was diluted with icecold water and acidified with acetic acid. The resulting solution waspartitioned between water and ethyl acetate. The organic extract waswashed with more water, separated, dried over sodium sulfate, filteredand evaporated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1111 (0.316 g, 86%yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.22-1.39 (m, 12H)3.55 (s, 2H) 4.58-4.63 (q, 1H) 7.11-7.38 (m, 5H) 12.29 (s, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.43 (m, 12H) 1.89 (brs,4H) 2.97-3.08 (m, 4H) 3.95-4.03 (m, 4H) 4.71-4.77 (q, 1H) 7.24-7.43 (m,11H) 8.45-8.48 (d, 1H) 10.99 (s, 1H) 12.4 (brs, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.43 (m, 12H) 1.89 (brs,4H) 2.97-3.08 (m, 4H) 3.95-4.03 (m, 4H) 4.71-4.77 (q, 1H) 7.24-7.43 (m,11H) 8.45-8.48 (d, 1H) 10.22 (brs, 1H) 12.4 (brs, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.5-1.52 (d, 3H) 1.75 (brs,4H) 2.88-2.93 (m, 2H) 3.03-3.05 (m, 2H) 3.79 (s, 2H) 3.86 (s, 2H)4.38-4.44 (q, 1H) 7.27-7.59 (m, 10H) 8.20-8.23 (m, 4H) 11.27 (s, 1H)12.71 (s, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.5-1.52 (d, 3H) 1.75 (brs,4H) 2.88-2.93 (m, 2H) 3.03-3.05 (m, 2H) 3.86 (s, 4H) 4.38-4.44 (q, 1H)7.27-7.59 (m, 10H) 8.20-8.23 (m, 4H) 11.27 (s, 1H) 12.71 (s, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.5-1.52 (d, 3H) 1.75 (brs,4H) 2.88-2.93 (m, 2H) 3.03-3.05 (m, 2H) 3.78 (s, 2H) 3.82 (s, 2H)4.91-4.96 (q, 1H) 7.20-7.35 (m, 9H) 7.55-7.58 (d, 1H) 8.20-8.23 (d, 1H)8.68-8.71 (m, 1H) 11.27 (s, 1H) 12.71 (s, 1H).

To an ice cold solution of 1-(5-bromo-2-fluorophenyl)ethanone (4.5 g,20.7 mmol) in methanol (100 mL) was added ammonium acetate (32 g, 414.7mmol) and sodium cyanoborohydride (6.15 g, 28.98 mmol). The reactionmixture was stirred at room temperature over the weekend before it wasconcentrated. The residue obtained was diluted with water, basified topH˜13 with 1N NaOH and extracted with dichloromethane. The organicextract was separated, dried over sodium sulfate, filtered andevaporated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1112 (1.8 g, 40%yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.24-1.26 (d, 3H)4.22-4.24 (q, 1H) 7.1-7.16 (t, 1H) 7.41-7.46 (m, 1H) 7.76 (m, 1H).

To a solution of 1112 (1.97 g, 9 mmol) in dichloromethane (100 mL) wasadded boc anhydride (1.97 g, 9 mmol) and the reaction mixture wasstirred at room temperature overnight before it was concentrated andpurified by silica gel chromatography eluting with EtOAc/Hexane toafford 1113 (2.4 g, 83% yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δppm 1.29-1.32 (d, 3H) 1.39 (s, 9H) 4.87 (q, 1H) 7.14-7.21 (t, 1H)7.46-7.58 (m, 3H).

To a degassed solution of 1113 (2.4 g, 7.54 mmol) andbis(tri-tert-butylphosphine)palladium(0) (0.77 g, 1.508 mmol) in dioxane(12 mL) was added 2-tert-Butoxy-2-oxoethylzinc chloride (38 mL, 18.85mmol) under Argon and the resulting reaction mixture was stirred at roomtemperature for 4 hr before it was quenched with saturated aqueousammonium chloride solution. The resulting solution was partitionedbetween water and ethyl acetate. The organic extract was washed withmore water, separated, dried over sodium sulfate, filtered andevaporated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1114 (2 g, 75%yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.29-1.32 (d, 3H)1.38-1.41 (m, 18H) 3.53 (s, 2H) 4.87 (q, 1H) 7.05-7.16 (m, 2H) 7.26-7.29(m, 1H) 7.48 (m, 1H).

To a solution of 1114 (2 g, 5.66 mmol) in methanol (100 mL) and water(25 mL) was added lithium hydroxide monohydrate (2 gm) and the resultingreaction mixture was stirred at room temperature for 2 days before itwas concentrated. The residue obtained was diluted with ice cold waterand acidified with acetic acid. The resulting solution was partitionedbetween water and ethyl acetate. The organic extract was washed withmore water, separated, dried over sodium sulfate, filtered andevaporated. The residue obtained was purified by silica gelchromatography eluting with EtOAc/Hexane to afford 1115 (1.5 g, 89%yield). ¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.29-1.31 (d, 3H)1.38 (s, 9H) 3.53 (s, 2H) 4.87 (q, 1H) 7.05-7.19 (m, 2H) 7.26-7.29 (m,1H) 7.45-7.48 (m, 1H) 12.32 (s, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.30-1.33 (m, 12H) 1.74(brs, 4H) 2.89 (m, 2H) 3.02 (m, 2H) 3.78 (s, 4H) 4.85 (q, 1H) 7.10-7.57(m, 11H) 8.19-8.22 (d, 1H) 11.26 (s, 1H) 12.64 (s, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.28-1.32 (m, 12H)1.73-1.75 (brs, 4H) 2.87 (m, 2H) 2.89 (m, 2H) 3.75 (s, 2H) 3.81 (s, 2H)4.85 (q, 1H) 7.06-7.57 (m, 11H) 8.18-8.21 (d, 1H) 11.26 (s, 1H) 12.64(s, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.51-1.53 (m, 3H) 1.75(brs, 4H) 2.90 (m, 2H) 3.02 (m, 2H) 3.78 (s, 2H) 3.85 (s, 2H) 4.65 (q,1H) 7.25-7.61 (m, 10H) 8.21-8.25 (d, 1H) 8.33-8.35 (brs, 3H) 11.29 (s,1H) 12.68 (s, 1H).

¹H NMR (300 MHz, Dimethylsulfoxide-d6) δ ppm 1.54 (d, 3H) 1.75-1.76(brs, 4H) 2.91 (m, 2H) 3.02 (m, 2H) 3.81-3.83 (m, 4H) 4.65 (q, 1H)7.24-7.63 (m, 10H) 8.22-8.25 (d, 1H) 8.36 (brs, 3H) 11.35 (s, 1H) 12.66(s, 1H).

To a mixture of 413 (1.62 g) in MeOH (25 mL), THF (10 mL) and H₂O (10mL) at room temperature was added 1N aq. NaOH (8 mL). This mixture wasstirred for 24 h before the organic volatile was removed under reducedpressure. The residue was neutralized to pH 7 with 1N aq. HCl solutionand extracted with EtOAc (2×20 mL). The combined extract was dried(MgSO₄) and concentrated. The crude was purified by silica gelchromatography eluting with 1-15% MeOH in dichloromethane to affordamine 1116. The resulting amine 1116 was converted to 660 as describedfor 335. ¹H NMR (300 MHz, DMSO-d₆) δ 12.68 (bs, 1H), 11.31 (s, 1H), 8.20(d, J=9.2 Hz, 1H), 7.57 (d, J=8.8 Hz, 1H), 7.52-7.21 (m, 8H), 3.90 (s,2H), 3.87 (s, 2H), 3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

3-Amino-6-chloropyridazine (55.5 g, 0.428 mol) and3-(Trifluoromethoxy)phenylacetic acid (1.1 equiv., 0.471 mol, 104 g)were dissolved in DMF (30.0 vol., 1.66 L) in a 3000 mL three neckround-bottom flask. Addition of DIEA (1.1 equiv., 0.471 mol, 82 mL) viaaddition funnel was done over 5 minutes. Propylphosphonic anhydridesolution (300 mL of a 50% solution in DMF, 1.1 equiv., 0.471 mol) wascharged into a 500 mL addition funnel and added dropwise to reactionsolution (keeping reaction temperature ≤+30° C.). The reaction usuallygoes to completion after 3 hours (TLC: 6:4 hexanes-ethyl acetate).Reaction mixture was then poured into 7.5% sodium bicarbonate (80.0vol., 4.4 L) which was chilled in an ice bath. Off-white crystallinepowder was filtered through a Büchner funnel, rinsed with water (20.0vol., 1.1 L). Dried in a 50° C. vacuum to a constant weight to affordN-(6-chloropyridazin-3-yl)-2-(3-(trifluoromethoxy)phenyl)acetamide 1117:yield of 119.6 g (77%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.63 (s, 1H), 8.38(d, J=9.4 Hz, 1H), 7.88 (d, J=9.4 Hz, 1H), 7.52-7.27 (m, 4H), 3.90 (s,2H).

4-Cyanobutylzinc bromide solution (3.0 equiv., 0.50 mol, 1.0 L) wascharged into an argon gas purged 5000 mL 3 neck round bottom flask.Argon_((g)) purge for 5 minutes followed by the addition of 1117 (1.0equiv., 0.167 mol, 55.3 g) and NiCl₂(dppp) (0.15 equiv., 0.0251 mol,13.6 g) under a blanket of argon_((g)). The reaction usually goes tocompletion after 4 hours (TLC: 1:1 hexanes-ethyl acetate). EtOAc (15vol., 832 mL) added to deep red solution. Water (15 vol., 832 mL) wasadded, thick slurry formed. 1N HCl added until slurry breaks to paleblue layer (˜6 vol., 333 mL). Transferred to separatory funnel andorganic layer was washed with 1N HCl (2×500 mL), dried (MgSO₄) andconcentrated by rotary evaporation (bath ≤30° C.) to a solid reddishoil. Oil dissolved in dichloromethane (15 vol., 832 mL), silica gel (100g) was slurried into red solution, this was concentrated by rotaryevaporation (bath ≤30° C.) to a solid reddish powder. Loaded onto a bedof silica gel (5 cm×11 cm), flushed with 25% hexanes in ethyl acetate (3L), combined organics concentrated by rotary evaporation (bath ≤30° C.).Dried under high vacuum to a constant weight to affordN-(6-(4-cyanobutyl)pyridazin-3-yl)-2-(3-(trifluoromethoxy)phenyl)acetamide1118: yield of 58.2 g (92%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.41 (s, 1H),8.28 (d, J=9.2 Hz, 1H), 7.65 (d, J=9.2 Hz, 1H), 7.52-7.27 (m, 4H), 3.89(s, 2H), 2.92 (t, J=7.5 Hz, 2H), 2.56 (t, J=7.0 Hz, 2H), 1.80 (m, 2H),1.61 (m, 2H).

1118 (1.0 equiv., 0.154 mol, 58.2 g) was charged into a 500 mL roundbottom flask along with thiosemicarbazide (1.2 equiv., 0.184 mol, 16.8g). TFA (5 vol., 291 mL) slowly added to reaction vessel while stirring.The reaction slurry was heated in a 65° C. bath with an open top refluxcondenser. The reaction usually goes to completion after 5 hours(determined by LC/MS). Toluene (10 vol., 582 mL) added to deep redsolution, azeotroped by rotary evaporation (bath ≤30° C.) to a red oil.Slowly transferred oil to a well stirred 6000 mL Erlenmeyer flaskcontaining 7.5% sodium bicarbonate solution (69 vol., 4.0 L) cooled in a0° C. bath. The crystals were filtered through a Büchner funnel andrinsed twice with diethyl ether (5 vol., 2×250 mL). Dried under highvacuum to a constant weight to affordN-(6-(4-(5-amino-1,3,4-thiadiazol-2-yl)butyl)pyridazin-3-yl)-2-(3-(trifluoromethoxy)phenyl)acetamide657; yield of 55.7 g (80%). ¹H NMR (300 MHz, DMSO-d₆) δ 11.33 (s, 1H),8.21 (d, J=9.2 Hz, 1H), 7.58 (d, J=9.2 Hz, 1H), 7.51-7.26 (m, 4H), 6.99(s, 2H), 3.88 (s, 2H), 2.87 (m, 4H), 1.71 (m, 4H).

To a solution of 657 (50 mg, 0.11 mmol) in DMF (3 mL) at 0° C. was added4-fluorophenyl acetic acid (22 mg, 0.14 mmol), HOBt (30 mg, 0.22 mmol)and EDCI (42 mg, 0.22 mmol). The resulting mixture was stirred at roomtemperature for 1.5 h before it was cooled to 0° C. and quenched withH₂O. The precipitate was collected by suction filtration and furtherpurified by silica gel chromatography eluting with 1-10% MeOH indichloromethane to afford 661. ¹H NMR (300 MHz, DMSO-d₆) δ 12.65 (bs,1H), 11.31 (s, 1H), 8.20 (d, J=9.1 Hz, 1H), 7.57 (d, J=9.4 Hz, 1H),7.49-7.14 (m, 8H), 3.87 (s, 2H), 3.81 (s, 2H), 3.06-2.86 (m, 4H),1.77-1.72 (m, 4H).

662 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.67 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.1 Hz,1H), 7.57 (d, J=9.1 Hz, 1H), 7.51-7.07 (m, 7H), 3.89 (s, 2H), 3.87 (s,2H), 3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

663 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.74 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.2 Hz,1H), 7.57 (d, J=9.2 Hz, 1H), 7.51-7.19 (m, 7H), 3.97 (s, 2H), 3.87 (s,2H), 3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

To a mixture of 1-bromo-3-(difluoromethoxy) benzene (1 g, 4.5 mmol),bis(tri-tert-butylphosphine) palladium(0) (460 mg, 0.9 mmol) in1,4-dioxane (30 ml) under argon atmosphere was added 0.5 M of2-tert-butoxy-2-oxoethyl zinc chloride in ether (22.5 ml). The resultingmixture was stirred at room temperature overnight. The mixture waspartitioned between saturated NH₄Cl and EtOAc. The organic extract waswashed with brine, dried over sodium sulfate, filtered and evaporated.The crude material was purified by silica gel chromatography elutingwith 0-10% EtOAc in Hexane to afford 1119.

To a solution of 1119 (300 mg, 1.16 mmol) in dichloromethane (5 ml) at0° C. was added TFA (3 ml) dropwise. The resulting mixture was stirredat room temperature overnight before it was evaporated to dryness thentriturated the residue with ether to afford 1120.

1121 was made using procedure described for compound 1120 from1-Bromo-3-(2,2,2-trifluoroethoxy)benzene.

A flask was charged with 1024 (50 mg, 0.135 mmol), 1120 (28 mg, 0.142mmol) in DMF (1 ml) at 0° C. was added HOBT (39 mg, 0.285 mmol) followedby EDCI (68 mg, 0.356 mmol). The resulting mixture was slowly warmed upto room temperature and stirred for 2 h before it was quenched byaddition of ice water (˜5 mL). The white precipitate was collected bysuction filtration, rinsed with more water to afford 664. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.12 Hz,1H), 7.58-7.54 (d, J=9.03 Hz, 1H), 7.48-6.99 (m, 10H), 3.85 (s, 2H),3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

665 was made using procedure described for compound 664. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.12 Hz,1H), 7.58-7.54 (d, J=9.03 Hz, 1H), 7.38-7.28 (m, 6H), 7.03-6.97 (m, 3H),4.77-4.74 (q, 2H), 3.80-3.78 (d, J=5.82 Hz, 4H), 3.01 (bs, 2H), 2.90(bs, 2H), 1.73 (bs, 4H).

A flask was charged with 348 (50 mg, 0.135 mmol), 1120 (28 mg, 0.142mmol) in DMF (1 ml) at 0° C. was added HOBT (39 mg, 0.285 mmol) followedby EDCI (68 mg, 0.356 mmol). The resulting mixture was slowly warmed upto room temperature and stirred overnight before it was quenched byaddition of ice water (˜5 mL). The white precipitate was collected bysuction filtration, rinsed with more water. The crude material waspurified by silica gel chromatography eluting with 0-6% MeOH indichloromethane to afford 666. ¹H NMR (300 MHz, DMSO-d₆) δ 12.71 (s,1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.12 Hz, 1H), 7.58-7.54 (d, J=9.03Hz, 1H), 7.48-6.98 (m, 10H), 3.81 (bs, 4H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H).

667 was made using procedure described for compound 666. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.12 Hz,1H), 7.58-7.54 (d, J=8.97 Hz, 1H), 7.35-7.28 (m, 6H), 7.03-6.97 (m, 3H),4.77-4.74 (q, 2H), 3.87 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H).

668 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.15 Hz,1H), 7.58-6.99 (m, 10H), 3.87-3.84 (d, 4H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H).

669 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.09 Hz,1H), 7.58-7.54 (d, J=9.37 Hz, 1H), 7.48-7.28 (m, 6H), 7.03-6.97 (m, 2H),4.77-4.74 (q, 2H), 3.87 (s, 2H), 3.78 (s, 2H), 3.01 (bs, 2H), 2.90 (bs,2H), 1.73 (bs, 4H).

A flask was charged with 657 (50 mg, 0.111 mmol), 2-pyridine acetic acidhydrochloride (20 mg, 0.116 mmol) in DMF (1 ml) at 0° C. was treatedwith propylphosphonic anhydride solution (91 ul) followed bytriethylamine (40 ul, 0.29 mmol). The resulting mixture was slowlywarmed up to room temperature and stirred for 1 h before it was quenchedby addition of ice water (˜5 mL). The yellow precipitate was collectedby suction filtration, rinsed with more water. The crude material waspurified by silica gel chromatography eluting with 0-6% MeOH indichloromethane to afford 670. ¹H NMR (300 MHz, DMSO-d₆) δ 12.67 (s,1H), 11.32 (s, 1H), 8.53-8.49 (m, 1H), 8.22-8.19 (d, J=9.12 Hz, 1H),7.78-7.76 (t, 1H), 7.58-7.26 (m, 7H), 4.01 (s, 2H), 3.87 (s, 2H), 3.01(bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

671 was made using procedure described for compound 670. ¹H NMR (300MHz, DMSO-d₆) δ 12.70 (s, 1H), 11.32 (s, 1H), 8.53-8.48 (m, 2H),8.22-8.19 (d, J=9.12 Hz, 1H), 7.76-7.26 (m, 7H), 3.87 (s, 4H), 3.01 (bs,2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

672 was made using procedure described for compound 670. ¹H NMR (300MHz, DMSO-d₆) δ 11.32 (s, 1H), 8.53-8.52 (bs, 2H), 8.22-8.19 (d, J=9.12Hz, 1H), 7.58-7.26 (m, 7H), 3.87 (s, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H),1.73 (bs, 4H).

673 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.69 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.1 Hz,1H), 7.57 (d, J=9.1 Hz, 1H), 7.51-7.21 (m, 8H), 3.90 (s, 2H), 3.87 (s,2H), 3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

674 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.63 (bs, 1H), 11.32 (s, 1H), 8.20 (d, J=9.2 Hz,1H), 7.57 (d, J=9.2 Hz, 1H), 7.51-7.38 (m, 3H), 7.33-7.09 (m, 5H), 3.87(s, 2H), 3.79 (s, 2H), 3.06-2.86 (m, 4H), 2.48 (s, 3H), 1.77-1.72 (m,4H).

A flask was charged with 657 (70 mg, 0.155 mmol), 5-pyrimidineaceticacid (22 mg, 0.162 mmol) in DMF (1 ml) at 0° C. was added HOBT (44 mg,0.326 mmol) followed by EDCI (78 mg, 0.408 mmol). The resulting mixturewas slowly warmed up to room temperature and stirred for overnightbefore it was quenched by addition of ice water (˜5 mL). The whiteprecipitate was collected by suction filtration, rinsed with more water.The crude material was purified by silica gel chromatography elutingwith 0-6% MeOH in dichloromethane to afford 675. ¹H NMR (300 MHz,DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 9.11 (s, 1H), 8.76 (s, 1H),8.22-8.19 (d, J=9.12 Hz, 1H), 7.59-7.26 (m, 6H), 3.94 (s, 2H), 3.87 (s,2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

676 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 8.70 (s, 1H), 8.61-8.57(m, 2H), 8.22-8.19 (d, J=9.36 Hz, 1H), 7.59-7.26 (m, 5H), 4.11 (s, 2H),3.87 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

677 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 8.89 (s, 1H), 8.22-8.19(d, J=9.15 Hz, 1H), 7.59-7.26 (m, 5H), 6.62 (s, 1H), 3.99 (s, 2H), 3.87(s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

678 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 9.06 (s, 1H), 8.22-8.19(d, J=9.21 Hz, 1H), 7.59-7.26 (m, 6H), 4.03 (s, 2H), 3.87 (s, 2H), 3.01(bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

679 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.67 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.2 Hz,1H), 7.57 (d, J=9.2 Hz, 1H), 7.51-7.36 (m, 4H), 7.29-7.12 (m, 4H), 3.87(s, 2H), 3.85 (s, 2H), 3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

680 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.67 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.3 Hz,1H), 7.57 (d, J=9.0 Hz, 1H), 7.51-7.28 (m, 8H), 3.87 (s, 2H), 3.84 (s,2H), 3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

To a solution of 674 (100 mg, 0.16 mmol) in dichloromethane at −78° C.was added m-CPBA (60 mg, 0.24 mmol) in 4 portions. The resulting mixturewas stirred at that temperature for 1 h before it was slowly warmed upto −10° C. and quenched with 25% aq. Na₂S₂O₃ solution. The reaction wasdiluted with EtOAc, washed with saturated aq. NaHCO₃ (3×10 mL). Thecombined organic layer was separated, washed with brine, dried (MgSO₄)and concentrated. The crude was purified by HPLC to afford 682. ¹H NMR(300 MHz, DMSO-d₆) δ 12.72 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.0 Hz,1H), 7.68 (m, 1H), 7.60-7.26 (m, 8H), 3.91 (s, 2H), 3.87 (s, 2H),3.06-2.86 (m, 4H), 2.76 (s, 3H), 1.77-1.72 (m, 4H).

681 was prepared from 657 and 3-methylsulphonylphenyl acetic acid by theprocedure as described for compound 661. ¹H NMR (300 MHz, DMSO-d₆) δ12.72 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.0 Hz, 1H), 7.92-7.83 (m,2H), 7.70-7.26 (m, 7H), 3.93 (s, 2H), 3.87 (s, 2H), 3.23 (s, 3H),3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

683 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 8.36 (s, 1H), 8.21-8.18(d, J=9.18 Hz, 1H), 7.84-7.80 (d, J=9.36 Hz, 1H), 7.59-7.26 (m, 6H),3.90-3.87 (d, 4H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

684 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 8.57 (s, 1H), 8.51-8.49(d, J=9.18 Hz, 1H), 8.21-8.18 (d, J=9.06 Hz, 1H), 7.79-7.75 (d, J=9.36Hz, 1H), 7.59-7.26 (m, 6H), 4.07 (t, 2H), 3.87 (s, 2H), 3.30-3.28 (m,1H), 3.19 (s, 3H), 3.01 (bs, 2H), 2.90 (bs, 2H), 2.3-2.5 (m, 1H),1.99-1.96 (m, 1H), 1.73 (bs, 4H).

685 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.52 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.1 Hz,1H), 7.61-7.25 (m, 7H), 3.87 (s, 2H), 3.80 (s, 3H), 3.62 (s, 2H),3.06-2.86 (m, 4H), 1.77-1.72 (m, 4H).

686 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.53 (bs, 1H), 11.32 (s, 1H), 8.20 (d, J=9.1 Hz,1H), 7.58 (d, J=9.2 Hz, 1H), 7.52-7.26 (m, 4H), 5.96 (s, 1H), 3.87 (s,2H), 3.67 (s, 2H), 3.64 (s, 3H), 3.06-2.86 (m, 4H), 2.21 (s, 3H),1.77-1.72 (m, 4H).

687 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.56 (bs, 1H), 11.32 (s, 1H), 8.20 (d, J=9.3 Hz,1H), 7.61-7.38 (m, 6H), 6.17 (d, J=2.2 Hz, 1H), 3.87 (s, 2H), 3.79 (s,3H), 3.75 (s, 2H), 3.03-2.90 (m, 4H), 1.7-1.72 (m, 4H).

688 was prepared by the procedure as described for compound 661. ¹H NMR(300 MHz, DMSO-d₆) δ 12.61 (bs, 1H), 11.32 (s, 1H), 8.20 (d, J=9.3 Hz,1H), 7.58 (d, J=9.3 Hz, 1H), 7.51-7.26 (m, 4H), 3.87 (s, 2H), 3.84 (s,2H), 3.07-2.86 (m, 4H), 1.77-1.72 (m, 4H).

To a solution of 657 (200 mg, 0.44 mmol) in DMF (4 mL) at 0° C. wasadded mandelic acid (124 mg, 0.66 mmol), HOBt (119 mg, 0.88 mmol) andEDCI (170 mg, 0.88 mmol). The resulting mixture was stirred at roomtemperature for 1.5 h before it was cooled to 0° C. and quenched withH₂O. The precipitate was collected by suction filtration and furtherpurified by silica gel chromatography eluting with 1-10% MeOH indichloromethane to afford 690 and a more polar 689. 689: ¹H NMR (300MHz, DMSO-d₆) δ 12.42 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.2 Hz, 1H),7.58-7.27 (m, 10H), 6.35 (d, J=4.4 Hz, 1H), 5.34 (d, J=4.3 Hz, 1H), 3.87(s, 2H), 3.03-2.89 (m, 4H), 1.77-1.73 (m, 4H). 690: ¹H NMR (300 MHz,DMSO-d₆) δ 13.05 (bs, 1H), 11.31 (s, 1H), 8.20 (d, J=9.0 Hz, 1H),7.59-7.26 (m, 15H), 6.26 (d, J=5.5 Hz, 1H), 6.11 (s, 1H), 5.38 (d, J=5.3Hz, 1H), 3.87 (s, 2H), 3.03-2.88 (m, 4H), 1.76-1.73 (m, 4H).

447 was prepared from 657 and 3-chloromandelic acid by the procedure asdescribed for compound 689. ¹H NMR (300 MHz, DMSO-d₆) δ 12.48 (bs, 1H),11.31 (s, 1H), 8.20 (d, J=9.2 Hz, 1H), 7.59-7.26 (m, 9H), 6.53 (m, 1H),5.36 (t, J=0.7 Hz, 1H), 3.87 (s, 2H), 3.03-2.90 (m, 4H), 1.75-1.71 (m,4H).

692 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 8.21-8.18 (d, J=9.18 Hz,1H), 7.80-7.26 (m, 9H), 3.92 (s, 2H), 3.87 (s, 2H), 3.01 (bs, 2H), 2.90(bs, 2H), 1.73 (bs, 4H).

693 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.75 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.06 Hz,1H), 7.79 (s, 1H), 7.59-7.26 (m, 6H), 6.31 (s, 1H), 5.20 (s, 2H), 3.87(s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

694 was made using procedure described for compound 675. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.18 (d, J=9.15 Hz,1H), 7.58-7.54 (d, J=9.18 Hz, 1H), 7.48-7.26 (m, 4H), 3.87 (s, 2H), 3.63(s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 2.39 (s, 3H), 2.13 (s, 3H), 1.73(bs, 4H), 1.57 (s, 9H).

To a solution of 694 (50 mg, 0.081 mmol) in dichloromethane (2 ml) wasadded TFA (2 ml) at 0° C. The resulting mixture was stirred at roomtemperature for 1 h before it was evaporated under vacuo to dryness.Ether was added and the white precipitate was collected by suctionfiltration, rinsed with more ether to afford 695. ¹H NMR (300 MHz,DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.36 Hz, 1H),7.60-7.57 (d, J=9.27 Hz, 1H), 7.51-7.28 (m, 4H), 3.88 (s, 2H), 3.57 (s,2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 2.45 (s, 3H), 2.15 (s, 3H), 1.73 (bs,4H).

696 was made using procedure described for compound 695. ¹H NMR (300MHz, DMSO-d₆) δ 12.71 (s, 1H), 11.32 (s, 1H), 8.22-8.19 (d, J=9.30 Hz,1H), 8.15 (s, 1H), 7.58-7.54 (d, J=9.30 Hz, 1H), 7.48-7.28 (m, 5H), 3.87(s, 2H), 3.76 (s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H), 1.59(s, 9H).

697 was made using procedure described for compound 695. ¹H NMR (300MHz, DMSO-d₆) δ 14.22 (s, 1H), 12.71 (s, 1H), 11.32 (s, 1H), 9.01 (s,1H), 8.22-8.19 (d, J=9.15 Hz, 1H), 7.59-7.26 (m, 6H), 4.04 (s, 2H), 3.87(s, 2H), 3.01 (bs, 2H), 2.90 (bs, 2H), 1.73 (bs, 4H).

Preparative HPLC Purification

All reverse phase preparative HPLC purifications were performed using aShimadzu Prominence Preparative Liquid Chromatograph with the column atambient temperature. Mobile phases A and B consisted of 0.1% formic acidin water and 0.1% formic acid in acetonitrile, respectively. Crudeproduct mixtures were dissolved in DMF, DMSO or mixtures thereof atconcentrations of approximately 100 mg/mL and chromatographed accordingto the methods described in Table 2. Appropriate chromatographicfractions were then evaporated under high vacuum at 45° C. using aSavant Speed Vac Plus Model SC210A to yield purified products.

TABLE 2 Preparative HPLC Method Descriptions Product Flow RetentionCompound Time Rate Time ID Column (min) % MPB (mL/min) (min) 7 1 0 20 27.4 1 20 2 2 20 5 3 70 5 14 100 5 8 1 0 20 2 11.5 1 20 2 2 20 5 3 70 514 100 5 26 1 0 40 1 6 1 40 2 3.5 40 4 4 40 4.73 10 90 4.73 29 2 0 40 27.7 1 40 3 2 40 18.9 13 50 18.9 36 2 0 32 3 12.1 0.5 32 5 1 32 18.9 1335 18.9 143 2 0 50 3 9.1 1 50 3 2 50 18.9 5 50 18.9 15 80 18.9 153 2 035 3 6.2 1 35 3 2 35 18.9 4 35 18.9 14 75 18.9 199 2 0 45 3 8.3 1 45 3 245 18.9 3 45 18.9 13 65 18.9 203 2 0 50 3 9.6 1 50 3 2 50 18.9 5 50 18.915 60 18.9 208 2 0 35 3 7.6 1 35 3 2 35 18.9 4 35 18.9 14 50 18.9

The following representative synthetic protocols may also be used forproducing compounds of the invention.

3,6-Dichloropyridazine is treated with di-tertbutyl malonate and sodiumhydride in THF or DMF to give 1026. Intermediate 1026 is then treatedwith sodium hydride in THF or DMF followed by bis-(chloromethyl)sulfideto give 1027. Intermediate 1027 is treated with TFA in dichloromethaneto give 1028. Intermediate 1028 is treated with ammonia to give 1029.Intermediate 1028 is also converted to 1029 by sequential treatment with2,4-dimethoxybenzyl amine and TFA. The bis-amino intermediate 1029 maybe converted to acylated products analogous to those described in Table3 using the methods described in Synthetic Protocols section above foracylation of 1001-1008.

Both trans- and cis-cyclopropane-1,2-diyldimethanols are converted intothe corresponding bis-nitrile 1031 via bis-mesylated intermediate 1030.The bismesylate intermediate 1030 is prepared by treating the diol withmethanesulfonyl chloride in the presence of pyridine or triethylamine indichloromethane. The bisnitrile 1031 is prepared by treating 1030 withsodium cyanide in DMSO or ethanol/water. Using a procedure similar tothat described for the preparation 1001, bis-nitrile 1031 undergoescyclization with thiosemicarbazide in TFA to provide bis-aminointermediate 1032. The bis-amino intermediate 1032 may be converted toacylated products analogous to those described in Table 3 using themethods described in Synthetic Protocols section above for acylation of1001-1008.

The alkene analog 1033 is prepared from trans-3-hexenedinitrile using aprocedure similar to that described for the preparation 1001. Thebis-amino intermediate 1033 may be converted to acylated productsanalogous to those described in Table 3 (for example, 1034) using themethods described in Synthetic Protocols section above for acylation of1001-1008. The products may be further converted to cyclopropyl analogs(exemplified by 1035) under the Simmons-Smith conditions (Et₂Zn, CH₂I₂,1,2-dimethoxyethane).

Example 2: Compound Assays

Compounds were assayed in both an in vitro biochemical assay and a cellproliferation assay as follows. The IC50 results are provided in Table3.

Recombinant Enzyme Assay

Compounds were assessed for their ability to inhibit the enzymaticactivity of a recombinant form of Glutaminase 1 (GAC) using abiochemical assay that couples the production of glutamate (liberated byGAC) to glutamate dehydrogenase (GDH) and measuring the change inabsorbance for the reduction of NAD⁺ to NADH. Substrate solution wasprepared (50 mM Tris-HCl pH 8.0, 0.2 mM EDTA, 150 mM K₂HPO₄, 0.1 mg/mlBSA, 1 mM DTT, 20 mM L-glutamine, 2 mM NAD⁺, and 10 ppm antifoam) and 50μL added to a 96-well half area clear plate (Corning #3695). Compound (2μL) was added to give a final DMSO concentration of 2% at 2× the desiredconcentration of compound. Enzymatic reaction was started with theaddition of 50 μL of enzyme solution (50 mM Tris-HCl pH 8.0, 0.2 mMEDTA, 150 mM K₂HPO₄, 0.1 mg/ml BSA, 1 mM DTT, 10 ppm antifoam, 4units/ml GDH, 4 mM adenosine diphosphate, and 4 nM GAC) and read in aMolecular Devices M5 plate reader at 20° C. The plate reader wasconfigured to read absorbance (λ=340 nm) in kinetic mode for 15 minutes.Data was recorded as milli-absorbance units per minute and slopes werecompared to a control compound and a DMSO-only control on the sameplate. Compounds with slopes less than the DMSO control were consideredinhibitors and plate variability was assessed using the controlcompound.

Results from this assay for several compounds of the invention are shownin Table 3, expressed as IC50, or half maximal inhibitory concentration,wherein IC50 is a quantitative measure indicating how much compound isneeded to inhibit a given biological activity by half.

Recombinant Enzyme Assay—Time Dependence

Compounds were assessed for their ability to inhibit the enzymaticactivity of a recombinant form of Glutaminase 1 (GAC) using abiochemical assay that couples the production of glutamate (liberated byGAC) to glutamate dehydrogenase (GDH) and measuring the change inabsorbance for the reduction of NAD⁺ to NADH. Enzyme solution wasprepared (50 mM Tris-HCl pH 8.0, 0.2 mM EDTA, 150 mM K₂HPO₄, 0.1 mg/mlBSA, 1 mM DTT, 10 ppm antifoam, 4 units/ml GDH, 4 mM adenosinediphosphate, and 4 nM GAC) and 50 μL added to a 96-well half area clearplate (Corning #3695). Compound (2 μL) was added to give a final DMSOconcentration of 2% at 2× the desired concentration of compound. Theenzyme/compound mix was sealed with sealing foil (USA Scientific) andallowed to incubate, with mild agitation, for 60 minutes at 20° C.Enzymatic reaction was started with the addition of 50 μL of substratesolution (50 mM Tris-HCl pH 8.0, 0.2 mM EDTA, 150 mM K₂HPO₄, 0.1 mg/mlBSA, 1 mM DTT, 20 mM L-glutamine, 2 mM NAD⁺, and 10 ppm antifoam) andread in a Molecular Devices M5 plate reader at 20° C. The plate readerwas configured to read absorbance (λ=340 nm) in kinetic mode for 15minutes. Data was recorded as milli-absorbance units per minute andslopes were compared to a control compound and a DMSO-only control onthe same plate. Compounds with slopes less than the DMSO control wereconsidered inhibitors and plate variability was assessed using thecontrol compound.

Results from this assay for several compounds of the invention are shownin Table 3, expressed as IC50, or half maximal inhibitory concentration,wherein IC50 is a quantitative measure indicating how much compound isneeded to inhibit a given biological activity by half.

Cell Proliferation Assay

P493-6 (myc “on”) cells were maintained in growth media (RPMI-1640, 10%FBS, 2 mM glutamine, 100 units/ml Penicillin and 100 μg/ml streptomycin)at 37° C. with 5% CO₂. For compound assay, P493-6 cells were plated in96-well V-bottom plates on the day of compound addition in 50 μl ofgrowth media at a cell density of 200,000 cells/ml (10,000 cells/well).Compounds were serially diluted in 100% DMSO at 200-times the finalconcentration. Compounds were diluted 100-fold into growth media andthen 50 μl of this mixture was added to cell plates making the finalconcentration of DMSO 0.5%. Cells were incubated with compound for 72hrs at 37° C. with 5% CO₂ and analyzed for antiproliferative effectseither by Cell Titer Glo (Promega) or FACS analysis using the Viacount(Millipore) kit on the Guava instrument.

Results from this assay for several compounds of the invention are shownin Table 3, expressed as IC50, or half maximal inhibitory concentration,wherein IC50 is a quantitative measure indicating how much compound isneeded to inhibit a given biological activity by half

TABLE 3 GAC Delta GAC N2 Delta Cell IC50 N2 prolif 60 IC50 P493 min no72 h Cmpd preinc preinc IC50 ID Structure (μM) (μM) (μM) 1

0.10 0.20 0.47 2

4.1 0.63 3

>50 >50 4

13 >50 5

>50 >50 6

>50 2.7 7

>50 1.0 8

>50 1.6 9

>50 >50 10

>50 >50 11

1.4 0.89 12

>50 36 13

7.7 12 14

2.8 1.8 15

>50 1.2 16

>50 0.80 17

15 4.2 18

4.5 8.2 19

11 1.7 20

6.6 2.6 21

0.16 0.02 22

>50 >50 23

>50 >50 24

0.51 2.3 25

1.2 1.5 26

5.6 0.70 27

>50 0.47 28

>50 1.0 29

0.56 4.1 30

1.2 2.5 31

>50 4.3 32

7.0 11 33

13 5.3 34

>50 >50 35

18 3.8 36

0.04 0.22 0.16 37

>50 >50 38

>50 3.2 39

26 4.5 40

3.7 0.56 41

7.9 33 42

>50 >50 43

2.3 >50 44

4.9 2.6 45

>50 >50 46

>50 16 47

8.3 35 48

>50 0.42 49

36 17 50

2.5 8.2 51

1.2 1.3 52

8.3 30 53

>50 34 54

9.2 1.6 55

>50 3.9 56

>50 57

40 58

>50 3.7 59

>50 60

24 14 61

>50 62

>50 19 63

25 2.6 64

1.3 0.23 65

1.3 0.52 66

20 67

3.0 1.8 68

4.9 0.34 69

0.69 0.33 70

3.4 3.4 71

>50 6.9 72

0.59 0.47 73

>50 74

>50 75

>50 76

>50 77

6.1 34 78

0.84 10 79

2.0 20 80

1.8 1.3 81

10 7.6 82

0.80 1.3 83

3.9 1.4 84

0.23 0.89 85

1.5 1.8 86

0.32 0.52 87

0.18 0.06 88

0.20 0.12 89

>20 90

>20 91

>20 92

0.14 0.38 0.47 93

0.90 2.0 94

0.28 0.47 95

2.9 45 96

>20 97

0.56 17 98

>20 3.9 99

2.7 1.0 100

8.1 9.0 101

24 17 102

0.24 1.4 103

19 >50 104

>20 105

9.9 119 106

>20 107

4.3 1.2 108

>20 109

>20 110

>20 111

0.95 0.88 112

0.51 0.89 113

>20 114

0.60 0.56 115

0.62 1.1 116

0.24 0.72 117

2.4 6.2 118

5.0 36 119

>20 13 120

1.8 38 121

1.7 3.5 122

3.5 43 123

12 6.6 124

>20 125

>20 126

5.8 12 127

1.8 0.45 128

32 >50 129

>20 >50 130

>20 131

19 132

>20 133

0.51 0.15 134

14 28 135

0.30 0.49 136

7.0 4.7 137

>20 138

0.75 2.7 139

>20 140

3.4 >50 141

1.7 4.3 142

>20 143

0.57 2.2 144

>20 145

>20 146

0.43 0.46 147

0.62 0.37 148

0.59 0.39 149

15 150

>20 151

14 >50 152

0.73 1.1 153

1.0 >50 154

19 >50 155

0.27 1.9 156

0.12 0.63 157

0.34 0.18 158

0.22 8.1 159

0.11 0.05 160

0.16 >50 161

0.15 1.4 162

0.23 0.15 163

0.13 >50 164

0.24 0.13 165

0.51 33 166

7.4 6.8 167

11 34 168

1.3 >50 169

0.71 3.4 170

7.4 9.3 171

>20 172

1.7 3.7 173

24 0.76 174

0.29 0.44 175

6.3 23 176

0.57 1.5 177

1.1 >50 178

1.5 >50 179

3.1 >50 180

8.8 >50 181

0.33 30 182

0.58 >50 183

>20 184

>20 185

>20 0.09 186

3.1 13 187

2.8 21 188

2.0 0.46 189

4.4 190

0.25 0.49 191

>20 192

>20 0.03 193

3.4 194

10 195

0.30 1.3 196

0.19 0.61 197

6.9 198

0.18 >50 199

0.12 0.17 200

0.61 201

2.7 202

0.18 0.14 203

1.7 1.7 204

0.92 2.4 205

0.38 4.1 206

>20 207

13 208

0.17 9.0 209

>20 22 210

0.38 0.42 211

1.2 1.0 212

>20 213

2.5 4.4 214

0.82 1.2 215

16 216

0.89 >50 217

0.24 >50 218

>20 219

0.17 0.57 220

1.6 0.31 221

>20 222

>20 223

>20 224

>20 225

>20 226

2.3 >50 227

9.9 3.3 228

0.57 0.13 229

3.9 230

12 231

7.4 232

9.8 233

15 234

2.0 2.5 235

0.11 0.21 236

0.20 1.4 237

0.20 0.25 238

13 239

0.30 0.30 240

0.54 1.3 241

0.38 0.87 242

0.36 0.22 243

2.7 33 244

0.84 1.7 245

0.52 2.5 246

0.40 1.6 247

0.19 0.83 248

2.3 249

0.12 0.16 250

0.12 0.14 251

2.8 2.8 252

1.2 6.3 253

21 254

>20 255

0.38 256

0.11 257

0.12 0.073 258

0.19 0.18 259

0.23 0.57 260

0.15 0.084 261

0.70 2.6 262

0.36 3.1 263

0.32 3.9 264

0.072 0.01 265

0.27 0.31 266

2.2 >50 267

0.61 0.64 268

0.60 5.4 269

0.26 0.52 270

>5 7.4 0.85 271

0.10 0.63 272

>20 273

0.14 0.07 274

0.75 0.68 275

0.15 2.2 0.34 276

1.5 56 277

>20 278

0.38 0.16 279

0.68 7.0 280

0.29 0.23 281

0.74 0.66 282

0.082 0.37 283

0.66 0.74 284

0.05 >20 285

0.19 0.14 286

0.54 6.4 287

0.57 1.3 288

0.04 0.67 0.028 289

32 290

0.80 0.79 291

1.5 1.8 292

0.12 0.012 293

0.24 0.04 294

0.20 1.1 295

0.01 0.057 0.039 296

0.10 0.17 297

6.4 298

0.73 5.1 299

0.33 300

0.16 0.16 301

>20 0.23 302

7.0 0.87 303

>20 304

1.2 4.9 305

>20 102 1038

0.080 1.5 306

0.031 0.52 0.066 307

6.4 9.3 308

0.60 1.2 309

0.11 0.18 310

0.083 0.12 311

0.20 22. 312

>20 N/D 313

0.27 94 314

0.14 0.048 315

0.017 0.12 0.035 316

0.19 0.075 317

0.007 0.18 0.010 318

0.006 0.18 0.017 319

0.64 10 320

0.40 0.19 321

2.5 2.6 322

2.8 3.0 323

0.056 0.20 324

0.011 4.6 0.10 325

0.17 0.66 0.030 326

>20 N/D 327

>20 0.15 328

>20 N/D 329

0.17 0.45 330

>20 N/D 331

>20 N/D 332

3.3 0.087 333

0.10 1.6 334

0.64 0.030 335

0.062 0.050 336

0.068 0.052 337

0.073 0.021 338

0.15 0.043 339

0.005 0.16 0.009 340

0.096 0.038 341

0.013 0.13 0.039 342

1.4 2.7 343

0.16 0.25 344

0.088 345

0.16 0.24 346

0.12 0.087 527

0.024 0.13 0.098 347

0.22 0.71 348

1.0 1.7 349

0.12 0.12 350

0.079 0.029 351

0.11 0.049 352

0.069 0.13 353

0.049 0.021 354

0.10 0.047 355

0.10 0.039 356

>20 N/D 357

>20 N/D 358

1.4 0.11 359

0.38 0.91 360

0.28 0.67 361

1.8 >20 1035

>20 N/D 362

0.35 0.054 363

0.065 >20 364

0.030 0.15 0.26 365

0.009 0.092 0.089 366

0.074 0.024 367

0.002 0.12 0.006 368

0.009 0.11 0.017 369

0.81 1.9 370

0.28 0.70 371

0.43 5.2 372

0.16 0.15 373

0.17 0.28 374

0.26 0.47 375

0.005 0.38 0.041 376

0.35 0.091 377

0.28 0.10 378

0.22 0.090 379

0.097 0.038 380

0.12 0.019 381

0.16 0.018 382

0.003 0.099 0.007 383

0.086 0.022 384

0.003 0.081 0.005 385

0.26 0.72 386

0.085 0.15 387

1.2 2.3 388

0.21 0.75 389

0.084 0.032 390

0.042 0.16 391

0.007 0.027 392

0.014 0.072 393

0.10 0.90 394

0.088 1.2 395

0.004 0.015 396

0.004 0.005 397

0.008 0.041 398

0.004 0.023 399

0.005 0.026 400

0.015 0.053 401

0.005 0.011 402

1.1 0.054 403

0.018 0.12 404

0.060 0.022 405

0.081 0.67 406

0.016 0.27 407

0.012 0.044 408

0.018 0.19 409

0.008 0.037 410

0.009 0.057 411

0.22 0.74 412

0.028 0.11 413

0.007 0.045 414

0.010 0.058 415

0.006 0.018 416

0.055 0.35 417

0.056 0.32 418

0.14 0.32 419

0.024 0.064 420

0.013 0.070 421

0.29 0.16 422

0.007 0.006 423

0.022 0.042 424

0.006 0.008 425

0.086 0.015 426

0.011 0.033 427

0.007 0.027 428

0.007 0.019 429

0.004 0.007 430

0.009 0.027 431

0.007 0.026 432

0.002 0.004 433

0.002 0.007 434

0.005 0.017 435

0.002 0.006 436

0.006 0.010 437

0.070 0.072 438

0.74 0.88 439

0.25 0.056 440

0.008 0.031 441

0.011 0.18 442

0.007 0.025 443

0.011 0.10 444

0.003 0.008 445

0.004 0.022 446

0.011 0.15 447

0.005 0.016 448

0.005 0.051 449

0.11 0.12 450

0.006 0.042 451

0.003 0.056 452

0.004 0.049 453

0.003 0.015 454

0.006 0.13 455

0.003 0.012 456

0.003 0.024 457

0.009 0.11 458

0.003 0.013 459

0.048 0.57 460

0.005 0.031 461

0.011 0.062 462

0.006 0.053 463

0.052 0.96 464

0.005 0.059 465

0.006 0.92 466

0.051 1.3 467

0.005 0.047 468

0.016 0.27 469

0.007 0.049 470

0.003 0.009 471

0.003 0.006 472

0.006 0.024 473

0.002 0.006 474

0.003 0.004 475

0.002 0.003 476

0.004 0.012 477

0.005 0.015 478

0.018 0.046 479

0.005 0.030 480

>20 6.3 481

0.004 0.012 482

0.007 0.038 483

0.004 0.009 484

0.003 0.011 485

0.004 0.012 486

0.004 0.024 487

0.005 0.042 488

0.32 1.9 489

0.008 0.023 490

0.011 0.25 491

0.008 0.023 492

0.006 0.014 493

0.019 0.057 494

0.019 0.58 495

0.005 0.014 496

0.003 0.017 497

0.004 0.032 498

0.003 0.017 499

0.010 0.19 500

0.004 0.029 501

0.004 0.069 502

0.007 0.075 503

0.008 0.15 504

0.007 0.12 505

0.008 0.24 506

0.010 0.17 507

0.013 0.041 508

0.011 0.020 509

0.010 0.009 510

0.022 0.094 511

0.58 1.1 512

0.005 0.046 513

0.007 0.022 514

0.009 0.063 515

0.007 0.059 516

0.003 0.028 517

0.003 0.046 518

0.004 0.063 519

0.009 0.059 520

0.007 0.056 521

0.006 0.052 522

0.023 0.060 523

0.021 0.055 524

525

526

528

0.007 0.044 529

0.032 0.16 530

0.055 0.28 531

0.006 0.042 532

0.006 0.059 533

0.007 0.041 534

0.008 0.044 535

0.007 0.090 536

0.006 0.071 537

0.007 0.076 538

0.004 0.030 539

0.009 0.045 540

0.007 0.050 541

0.004 0.006 542

0.004 0.043 543

0.004 0.005 544

0.006 0.044 545

0.006 0.046 546

0.005 0.027 547

0.006 0.031 548

0.010 0.085 549

0.006 0.045 550

0.005 0.036 551

0.010 0.127 552

>20 0.005 553

0.005 0.019 554

0.008 0.172 555

0.004 0.010 556

0.005 0.12 557

0.025 0.12 558

0.006 0.028 559

0.012 0.066 560

0.010 0.037 561

0.004 0.004 562

0.003 0.002 563

0.003 0.003 564

0.004 0.002 565

0.005 0.013 566

0.006 0.015 567

0.43 0.021 568

0.009 0.028 569

0.006 0.011 570

0.43 0.009 571

0.011 0.010 572

0.003 0.004 573

0.004 0.015 574

0.006 0.028 575

0.007 0.040 576

0.003 0.013 577

0.004 0.034 578

0.004 0.022 579

0.004 0.009 580

0.005 0.013 581

0.011 0.24 582

0.005 0.046 583

0.005 0.042 584

0.22 1.4 585

0.006 0.070 586

0.013 0.031 587

0.007 0.057 588

0.008 0.27 589

0.004 0.025 590

0.007 0.087 591

0.004 0.033 592

0.004 0.011 593

0.005 0.033 594

0.007 0.050 595

0.007 0.059 596

0.015 0.33 597

0.005 0.017 598

0.005 0.004 599

0.010 0.039 600

0.005 0.008 601

0.006 0.036 602

0.006 0.036 603

0.009 0.023 604

0.015 0.042 605

0.013 0.018 606

0.007 0.045 607

0.007 0.047 608

0.007 0.037 609

0.009 0.014 610

0.005 0.011 611

0.006 0.040 612

0.065 0.10 613

0.019 0.45 614

0.008 0.082 615

0.009 0.12 616

0.008 0.13 617

0.005 0.040 618

0.008 0.035 619

0.013 0.15 620

0.005 0.011 621

0.005 0.020 622

0.004 0.010 623

0.003 0.026 624

0.004 0.009 625

0.004 0.006 626

0.004 0.017 627

0.028 0.85 628

0.027 0.17 629

>20 0.065 630

0.004 0.009 631

0.005 0.006 632

0.010 0.20 633

0.007 0.13 634

0.006 0.048 635

0.005 0.030 636

0.008 0.059 637

>20 >50 638

0.48 5.7 639

0.17 23 640

0.12 0.070 641

0.14 0.50 644

0.003 0.013 645

0.002 0.015 646

0.007 0.037 647

0.004 0.018 648

0.004 0.011 649

0.004 0.034 650

0.013 0.14 651

0.006 0.037 652

0.004 0.039 653

0.005 0.010 654

0.005 0.007 655

0.019 0.35 656

0.018 0.40 657

0.24 1.5 658

0.005 0.040 659

0.010 0.058 660

0.025 0.037 661

0.007 0.12 662

0.007 0.055 663

0.007 0.089 664

0.005 0.060 665

0.005 0.10 666

0.004 0.058 667

0.004 0.11 668

0.009 0.026 669

0.021 0.026 670

0.005 0.030 671

0.004 0.035 672

0.010 0.045 673

0.006 0.033 674

0.008 0.024 675

0.040 676

0.030 677

0.056 678

0.026 679

0.036 680

0.033 681

0.019 682

0.017 683

0.024 684

0.042 685

0.022 686

0.010 687

0.011 688

0.012 689

0.013 690

0.017 692

0.020 693

0.070 694

0.029 695

0.030 696

0.034 697

0.050 698

0.098 699

0.12 700

0.17 701

0.11 702

0.31 703

0.012 704

0.88 705

0.032 706

14 707

0.085 708

2.8 709

0.14

Example 3: Xenograft Efficacy Studies

Certain compounds were assayed for in vivo efficacy in xenograft modelsas follows.

Female scid/bg mice, approximately 6 weeks of age, were implantedsubcutaneously on the right flank with 5×10⁶ HCT116 cells per mouse in avolume of 100 uL of sterile PBS. When tumors reached a volume of 50-100mm³, mice were randomized to groups of n=10 to receive either vehicle ortest compound delivered twice daily by intraperitoneal injection. Tumorswere measured three times per week using Vernier calipers and tumorvolume calculated using the formula: Volume=(Length×Width/2), wherelength and width are the longest perpendicular sides of the tumor.Dosing continued twice daily until control tumors reached a size of 2000mm³. Statistical comparisons were made using a 2-way ANOVA withBonferroni post-test.

FIG. 1 shows that intraperitoneal administration of compound 188 to miceresults in reduced tumor size in this HCT116 colon carcinoma xenograftmodel.

Example 4: Caco-2 Permeability Assay

Caco-2 cells are commonly used in a confluent monolayer on a cellculture insert filter. When cultured in this format and under specificconditions, the cells become differentiated and polarized such thattheir phenotype, morphologically and functionally resembles theenterocytes lining the small intestine. The cell monolayer provides aphysical and biochemical barrier to the passage of small molecules, andis widely used across the pharmaceutical industry as an in vitro modelof the human small intestinal mucosa to predict the absorption of orallyadministered drugs (Hidalgo et al., Gastroenterology, 1989; Artursson,J. Pharm. Sci., 1990). The correlation between the in vitro apparentpermeability (P-app) across Caco-2 monolayers and the in vivo absorptionis well established (Artursson et al., Biochem. Biophys. Res. Comm.,1991).

The present assay was used to determine the bidirectional permeabilityof the compounds of the invention through Caco-2 cell monolayers. Caco-2cells were grown in confluent monolayers where the media of both theapical (A) and basolateral (B) sides were at pH 7.4. Compounds weredosed at 1 μM in the presence of 200 μM Lucifer Yellow, on the apicalside (A→B) or the basolateral side (B→A) for assessment, in duplicate.Samples from both A and B sides were taken after 120 minutes exposure,and compound concentration (reported as percent recovery) was determinedusing a generic LC-MS/MS method with a minimum four-point calibrationcurve.

The absorption potential of compounds were classified as either Low(P-app<1×10⁻⁶ cm/s) or High (P-app>1×10⁻⁶ cm/s). The efflux ratio wascalculated as (Papp B→A)/(Papp A→B), with efflux ratios beingsignificant when greater than or equal to 3 when the Papp (B→A) wasgreater than or equal to 1×10⁻⁶ cm/s. Results for certain compounds ofthe invention are shown in Table 4.

TABLE 4 Caco-2 Permeability Results Permeability Sig- Recovery PappEfflux Classi- nificant Cmpd Direction (%) (avg.) Ratio fication Efflux533 A→B 41 4.94 7.6 High Yes B→A 52 37.5 585 A→B 42 7.52 3.1 High YesB→A 53 23.4 616 A→B 65 8.23 6.0 High Yes B→A 76 49.5 295 A→B 89 8.17 7.3High Yes B→A 96 59.8 318 A→B 73 2.45 18 High Yes B→A 82 44.5 339 A→B 732.39 17 High Yes B→A 80 41.6 354 A→B 117 1.38 33 High Yes B→A 101 45.0436 A→B 44 3.75 6.6 High Yes B→A 57 24.7 660 A→B 56 0.61 3.9 Low Yes B→A68 2.37 670 A→B 70 9.64 6.2 High Yes B→A 72 59.6 679 A→B 34 7.59 2.6High No B→A 42 19.6 447 A→B 71 7.76 3.5 High Yes B→A 56 27.2 703 A→B 516.26 6.6 High Yes B→A 66 41.0 705 A→B 60 8.52 6.0 High Yes B→A 67 51.0

Example 5: Solubility

Ca. 1 mg portions of test article were combined with 120 μL solvent inwells of a 96×2 mL polypropylene plate. The plate was vigorously vortexmixed at room temperature (ca. 20 C) for 18 hr and each well checkedvisually for undissolved solid; wells containing no visible solid werecharged with additional solid test article and vortex mixed another 6 hrat room temperature after which all wells showed visible solid. Thecontents of all wells were then filtered through a 0.45 μm GHP filterplate to yield clear filtrates. 5 μL of each filtrate was diluted into100 μL DMF and vortex mixed to yield HPLC samples. Duplicatequantitation standards for each test article were prepared by dilutingweighed portions of solid test article in measured volumes of DMF. 2 μLof each HPLC sample and quantitation standard were analyzed by HPLCusing the method outlined in Table 5. Dissolved test articleconcentrations were calculated by peak area ratio against theappropriate quantitation standards. Solubility results are presented inTable 6.

TABLE 5 Outline of HPLC Method Instrument Shimadzu Prominence UFLC withDiode Array UV/Vis Detector Column VWR Sonoma C8(2), 3.5 μm, 2.1 × 50 mmColumn 40° C. Temp Mobile 0.1% (v/v) formic acid in water Phase A Mobile0.1% (v/v) formic acid in acetonitrile Phase B Flow Rate 0.4 mL/min Time(min) % Mobile Phase B Gradient 0 20 8 100 8.5 100 8.6 20 9.6 END

TABLE 6 Measured Solubilities Solubility (mg/mL) Solvent 1 295 402 585water <0.002 <0.002 <0.004 <0.002 0.9% NaCl <0.002 <0.002 <0.004 <0.0020.1M HCl <0.002 0.003 <0.004 <0.002 50 mM Cit <0.002 <0.002 <0.004<0.002 pH 2.3 50 mM Cit <0.002 <0.002 <0.004 <0.002 pH 3.3 50 mM Cit<0.002 <0.002 <0.004 <0.002 pH 4.4 50 mM Cit <0.002 <0.002 <0.004 <0.002pH 5.4 PBS <0.002 <0.002 <0.004 <0.002 0.1M 14.420 0.268 <0.004 0.192NaOH 10% PS80/ 0.050 0.027 0.153 0.261 50 mM cit 10% CrEL/ 0.076 0.0550.157 0.228 50 mM cit 20% 0.046 0.090 0.019 0.125 SBECD/ 50 mM cit 20%0.042 0.167 0.056 0.327 HPBCD/ 50 mM cit Labrasol 0.258 0.918 31.0325.004 Capryol 0.042 1.540 11.210 1.780 PGMC Capryol 90 0.081 0.21513.676 1.744 canola oil <0.002 <0.002 0.529 0.072 PEG400 0.451 1.64430.179 3.944 PG 0.048 0.234 1.365 1.422 EtOH 0.040 0.083 2.958 1.991Solubility (mg/mL) Solvent 670 447 703 water 0.007 <0.004 <0.004 0.9%NaCl <0.002 0.005 <0.004 0.1M HCl 0.005 <0.004 <0.004 50 mM Cit 0.066<0.004 <0.004 pH 2.3 50 mM Cit 0.003 <0.004 <0.004 pH 3.3 50 mM Cit<0.002 <0.004 <0.004 pH 4.4 50 mM Cit <0.002 <0.004 <0.004 pH 5.4 PBS<0.002 <0.004 <0.004 0.1M 0.227 0.192 0.656 NaOH 10% PS80/ 1.204 0.8510.378 50 mM cit 10% CrEL/ 0.458 0.732 0.309 50 mM cit 20% 5.256 2.7180.476 SBECD/ 50 mM cit 20% 9.685 2.177 0.651 HPBCD/ 50 mM cit Labrasol5.042 77.164 20.727 Capryol 1.519 7.916 3.683 PGMC Capryol 90 1.97411.114 7.409 canola oil 0.012 0.071 0.014 PEG400 9.901 57.334 22.419 PG2.569 8.265 4.698 EtOH 0.964 3.921 2.645

INCORPORATION BY REFERENCE

All publications and patents mentioned herein are hereby incorporated byreference in their entirety as if each individual publication or patentwas specifically and individually indicated to be incorporated byreference. In case of conflict, the present application, including anydefinitions herein, will control.

EQUIVALENTS

While specific embodiments of the subject invention have been discussed,the above specification is illustrative and not restrictive. Manyvariations of the invention will become apparent to those skilled in theart upon review of this specification and the claims below. The fullscope of the invention should be determined by reference to the claims,along with their full scope of equivalents, and the specification, alongwith such variations.

1-71. (canceled)
 72. A method of making a compound having the structureof formula A:

comprising combining a compound having the structure of formula B:

with a compound having the structure of formula C:

in dimethylformamide to form a mixture and treating the mixture withpropylphosphonic anhydride and triethylamine, thereby forming a compoundof formula A.
 73. The method of claim 72, further comprising combining acompound having the structure of formula D:

with a compound having the structure of formula E:

in the presence of trifluoroacetic acid, thereby forming a compound offormula B.
 74. The method of claim 73, further comprising combining acompound having the structure of formula F:

with BrZn(CH₂)₄CN solution and a NiCl₂(dppp) catalyst, thereby forming acompound of formula D.
 75. The method of claim 74, further comprisingcombining a compound having the structure of formula G:

with a compound having the structure of formula H:

in the presence of dimethylformamide to form a mixture, then treatingthe mixture with diisopropylethylamine and propylphosphonic anhydridesolution in dimethylformamide, thereby forming a compound of formula F.